Just an observation. You only need to diode isolate the reverse light wire. The other end of the overrride switch is at 12 volts so if you close the switch while the car is in reverse you get no current flow since the potential coming off the reverse wire and the switch is the same. Very well explained write up.
Yes, this configuration looks like you would have it on when in reverse as well as when you wanted to. For me, having it work with the switch only is fine.
Great stuff, but I think only 1 diode on the reverse trigger wire might be good if we are just trying to keep the back up light from going on when the switch is closed. Also, a fuse coming from the power source to the switch might be a good thing.
I thought this too but if you are using a switch with a light in it then that will illuminate when reverse is selected in gearbox. If you only want override switch to light up when using switch then double diode is necessary. This won't matter if it's a non illuminated switch though and a single diode can be used.
@@Jpcars636 Just to clarify, are you saying you want the cam to work completely manually through a switch and not at all through the cars reveres light circuit?
@@s3uoq Right, I was speaking of a basic toggle. An illuminated switch or pilot light will light up from the reverse circuit. Not sure it would be as huge an issue as the back up light coming on but if it's not wanted then, yes, 2 diodes are needed.
Every video is seriously pissing me off with this. If I never hook the power up to the reverse light how can you have a problem with it. All you had to say was dont plug it into the reverse light
Thanks for posting this video. It may be almost 6 years old but that doesn't make it any less helpful! After watching this video, I bought some 6 amp diodes from Lessco Electronics. I purchased a new head unit for my 2013 Silverado, and added a backup camera. I followed your instructions on your video and it works like a charm! Thank you!
thank you, i was trying to figure this out last night and felt like my brain was frying so i decided to take a break until today and this is exactly the problem I was having! thanks thanks thanks! I knew there was something i needed to add in line just had no idea what to do.
Ok i wired up completley like you said now i tapped the reverse and the switch wires after diode and ran the red to the reverse signal wire on the stereo is that wrong ? because i am able to get the camera to show u with the switch on AV but the review doest come on when i revers back up camera app stays dark no matter what i do
I wish someone would answer this question. I’m guessing there has to be another power source. Maybe the power wire that runs along the rca for the camera.
I installed dvn927bt with JBL adapter it whistles not all the time seems like it's only when it's quiet mostly because I probably can't hear it for the radio for DVD CD blah blah blah how do I get rid of that whistle I put a ground wire from the radio to the frame whistles still there it's just different wrench man 55 at yahoo.com
2016 or 2015 silverado I would say find a constantly on 12v like off the battery put a diode on it and tie it in on 1739 (red) in the rear body junction box with a diode to prevent it from going back up to the ignition. Then find an always on neutral like off the battery and tie it in on 24 (white) in the rear body junction box with dual diodes to be safe (probably not needed since it is a neutral, but just to be safe anyway) and then break that neutral thru your switch and it should power the rear camera on and off thru your switch. Just my opinion, but looks like it would work. 4 diodes 2 wires and a switch should put it in business.
Sir, hi thank you for your video got better understanding now how to wire my camera using switch and diode. But one question on the 12V switch and 12V power coming from the tail light ... 1. How about if I forgot to turn off my switch and suddenly reverse my car, power supply from reverse light and my switch are both triggered? what will happen 2. My car still using halogen bulbs reverse light maybe about 21watts “guest only” what diode capacity is ideal? 3. hope you can help me to solve this question in my mind... thanks Anton
Why two diodes? Is the one on the switch loop actually necessary? What is its purpose? Please don't tell me you only explained it this way in order to goad ppl into buying more diodes from your websites? Please explain. I'm no expert I'm just saying I don't understand its purpose.
Looks like he got lost trying to explain (kiss) keep it super simple don't waste time going to taillight if your going to toggle switch just go direct power like you were kinda showing at the end when it looked like you erased your reverse wire but at the end you wanted the wire can we have a part 2 video showing it the simple way with just a toggle switch and if needed the diode for the diode can you use the one that resembles a fuse or is the size to big as it would be easy to crimp a fuse holder and put the diode in there last note check the camera angle (seems like this is your early days keep it up and you'll have a good following )
This is absurd !! Just connect the reverse wire from the head unit to the reverse wire in the car harness, then connect the red wire (12V) to the red wire on the head unit that is already connected to the accessory wire in the car harness. This way the camera is on as soon as you turn the key. It will come on when you go into reverse, and also you can go into the head unit and switch to the rear camera input, and you can watch the rear when driving on the screen. Done
couldnt you do the same basic thing, only bypass the reverse connection at the tail light, and run 12 volts thru the switch to the radio reverse, and the camera power? you would have to manually switch the camera on when going into reverse, but it eliminates the need for diodes as well as eliminates the need to tap into the tail light wires.
Hello, I have installed an Android Radio with rear view camera and this is exactly the problem I am facing right now. I don't want to switch on the camera in reverse but also manually while driving. The problem is known. Then the reverse gear lamp will light up too. I wanted to do the same with the diodes but I didn't know how. Your video explains a lot more. I already have a switch for my USB charger in the front. I would like to steal the 12+ from this switch and send it to the camera. But what I don't understand is, why is it not enough to install a diode in front of the reverse lamp? do I have to install 2 diodes? Would there be a short circuit if I installed only 1 diode, because the 12+ goes from the reverse lamp to the switch? I happen to have an SR260 m10? diode. would that work too?
Instructions. Reverse taillight provides power to camera and must be connected to brown reverse wire of radio. Yellow rca camera to radio.black is Ground . I use ground of reverse light bulb.works fine. Put car reverse, radio switches to camera display
Dude , I don't care how old this video is - You are the MAN !!! Followed your tutorial to the T. Works like a champ first try. All you naysayers need to take a hike . Relay SMELAY . When you turn it on it does NOT have a jerky turn on. It is a smooth as butter transition . If you know ANYTHING about electronics , this is what you want . Thanks man I am HAPPY !!!
So this may be a dumb question, but why are the diodes necessary? I am wanting to use a toggle switch for on off function so I can view at any point while towing and using a small separate lcd screen for viewing. I am using an add a circuit in the fuse box to tap for power. Thanks for answers and pointers.
its is hooked up like the diagram but the red wire is going to my violet and white striped revers signal wire im thinking that may be wrong no clue why it only works in av mode not in back up camera mode i was thinking maybe because of my relay that allows me to watch video while in motion idk
Seems like an overly complicated way of doing things. This video suggests you need a switch and diodes (soldering, presumably) to arrange things, but I highly suspect that most head units (especially after-market) already have circuits in place to do this; just need to wire it correctly. He is right that the radio will be "looking" for a 12v trigger for the back-up camera. So you have a choice. If you want the camera to be on only when in reverse, then you can share the same circuit with the radio and the reverse (lights). If you want to be able to view the camera whenever the car is on, then the camera must be supplied by accessory power (running lights will often be able to this). The radio should not share the same 12v reverse circuit in this case. For the radio to automatically switch to the camera when in reverse though, it still needs to be wired in to the reverse circuit.
so i got a 98 cav. bought a cheap radio cause i wasnt sure this would work anyway. on my video wire (yellow) each end has a red wire on each side which i assume is the 12 volt wire. i spliced this wire into the red wire on my pig tail of my radio which says its 12 volts. on the other end i dont know where to put it so i spiced into the red wire that draws power from the reverse light and i spliced the ground into the ground wire on my park lights. did i wire this wrong? needless to say it did not work.
Any chance you can do a tutorial on driving with backup camera not going off. I have a 2017 Chevy cruze and would like to figure out a way to wire a always going really cam so that as I'm driving I know what's coming up behind me or if there is anyone in the lanes I can't see.... Lol. Please your the best
I have a rear view mirror with 2 channel video screen, 2 sets of rca wires and 2 sets of wires to activate the mirror channels. I already installed a back up camera to 1 channel that activates when in reverse only. I’m stumped because I want to instal the other camera to the bottom of the passenger mirror and I want to activate the camera to show the side image when I activate the right turn signal only . Can anyone show us the wiring diagram for this set-up? Thank you, I really appreciate anyone’s help.
My question is, if the Diodes are so cheap, and you always want to over kill with them, then why wouldn't you only carry 10amp Diodes? Or are they not "that" cheap?
Great vid, learned a lot, thanks. Waiting for my cam and LCD to arrive. Dumb question, is the red wire to the DVD Receiver's "camera input" the actual signal feed or just the power? Have you just ignored the video cable between cam and monitor? Less dumb question, maybe:- I'd like to power mine from an ignition-on 12V to use as a rearview mirror replacement in a van, but I'm not sure if there is a source in the rear light assembly. Should there be one in there somewhere? If not, do you reckon it's ok to power it from the tail light rather than backup light? I'll then put the side lights (running lights) on to use the rear view. I don't want to have to run a ign-on cable all the way from the front.
What would happen, if the switch is on (+12V) and I go into reverse (+12V)? Do I have an overvolt situation (+24V, series circuit) or is this (at 09:57) a parallel circuit and I would still have only +12V? I don't want to damange my stereo or camera.
in this case without using the diode i would connect the camera straight to the battery power or to the remote power and connect reverse wire from the head unit to the reverse wire into the taillight reverse wire. you do not have to use any switch or diode
How to modify this scheme if I want use with an uvc usb camera attached to a tablet? There is an app that can launch upon connecting the camera. So back llight relay/switch part of the scheme should work. It is not clear for me how to switch on camera bypassing the reverse.
I really hope u can help. I installed a backup camera on my car. Connected red wire to taillight and black wire to what i assume is reverse trigger for the hu. When i put the car in reverse without connecting the video rca cable, the radio switches to a black screen where i assume the rearview would be if video cable was connceted. When i put the car in reverse with the rca connected, nothing happens. Help pls??!
Wouldn't you only need one diode on the tail light? If the switch is off isn't that acting as a diode and if its left on when in reverse I don't think it would hurt anything, because you would be adding voltage to account for any drop from the extra wires. Not that diodes are expensive and I like the idea of isolating things for safety, I'm just wondering if there is a need for it.
PLEASE REPLY ASAP! Great video! I just liked & subbed! ------------- BUT! Now I have a question for ya! If I am not wanting the camera on anytime I want it, just when in reverse, could I tap into the reverse light pos and rev light neg wires at the light which is right next to the camera of course, then run the vid cable and the reverse signal turn on wire (if that is what the other wire even is? SEE other question below) to the head unit? The reason I ask is before i found your video, i watched others that showed it done this way and i went ahead and run the wires as i wait for my head unit to arrive. Hoping I did not screw up and have to redo all i done because it was a pain in my 2011 prius to run the wires from the top of the hatch(where the tag is) down to the tail light then all the way to the front of the car! Also just to be sure, the video rca cable also has a little red-pigtail on each end of it. ----- I could not find out for sure about this pigtail so to be safe i went ahead and ran another wire from the rear pigtail to the front pigtail,(the red short wire found on each end of the video rca cable) just incase i am right and this wire will be used to let the HUnit know when to switch to cam by connecting it to the wire labeled reverse on the hu's wiring harness. Am I right or am I all screwed up??? Thanks! PLEASE HELP!
I don't understand why you need a diode for the switch. If for some reason the switch was accidentally closed while you were in reverse, would it even matter, it's all positive current anyway ?
Hello there, aloha everyone! need some help here if any? I got one of those camera, and ive installed it, followed every single instruction for installation! I have a alpine ive head unit with a reverse trigger, i connected the camera power source to the reverse back up light, and the reverse trigger from the head unit to the + reverse back up light! In the morning is fine camera works ok, powers on when switch the gear to reverse and triggers the head unit to show the back up camera, but the problem is at night, yes! Its When i turn on the tail lights and step on the brake pedal, my head unit triggers to camera even gear is not on reverse, there is no image since camera on powers when i put the gear on reverse! So yeah at nigh when i turn on the tail lights and every time i step on break this happens, it triggers my head monitor in reverse, i tried and check all the wirings, and even replace all the tail light, brake signal light bulb new, but its weird when i remove one of the brake light bulb and turn the tail lights on and step on brake its doesnt trigger my head unit monitor to reverse,! Is there anything im missing? Really need help, thank u in advanced, mahalo!
Wouldn't i just skip tapping into the reverse wire in the tailight? I don't need the camera to come on all the time when i reverse i will mainly need it for towing, so would i just be able to wire the camera power to the switch and call it a day? :)
I was thinking the same thing. Maybe this is done to reduce feedback, but I was thinking to just eliminate the reverse light wire tap and diode and just use one diode from the switch.
No, because when the camera comes on, it overrides every other function and takes over the screen. You don' t have access to any other functions, you just have the camera picture on.
I think this is more complicated than simply using a Single Pole Double Throw toggle switch. You also get the option of being able to turn it off all together. Thanks anyhow.
How about back up camera wired to monitor on dash for use during driving. But splitting to a 2nd monitor when parked with 2nd monitor in the back? I have a van I am going to be staying in on business trips and would like option to use the cameras as security cameras to see outside when in the back Ideas?
I purchased a Chines unit S160 for my 2013 Ford Escape and I want to hook up my back up camera but the unit has 4 wires one is RCA for camera in and I have three other wires a BLACK RAD AND GREEN REVERSE I know that I have to hook up the reverse wire to the back reverse rad wire but what abut the other two, do I hook up the rad wire with the green and the rad from the back together and the black to the ground ?
It's worth noting a lot of current stereos that can be used as a back up camera, have an input from the reverse lights, and an output to power up the camera. Stops this convoluted route with diodes, and simplifies the whole install.
single pole double throw is simpler. no need for diodes. youre already going to put a switch in so just go with the spdt. you even said "diodes get hot" diodes get hot = more likely failure. the only benefit to this is if the switch fails you will still get the camera in reverse. if the spdt fails. you have no camera.
He said SPDT switch. Are you insinuating voltage could jump between the poles of the switch? Camera and monitor on the common, 12V ignition and reverse lights on the switching poles. Unless power jumps through the switch, you're isolated. Sorry, but you're thinking way too much into this.
Exactly what I wanted. However if I am going to add a second LCD screen (A 5 or 7 inch el chepo chines), dedicated to for the Second reverse camera! Wouldn't that be a good idea, for all time electronic rear view mirror, as my truck gives me very poor coverage through optical mirror (Lifted truck and what not). I ask this because of many reasons. First the current back up camera has Wide angel lens so really not suitable for permanent view and then has those not needed Stop / Waring lines for parking. Then By not messing with car's OEM system, I may cause less chance of damage to the HU, and camera that are going to be one 24/7, when car running. Additionally beside choosing a camera that has closer to normal human eye field of view, I am going to hang it on top of the back of the car or behind the rear glass, and not low, at bumper level, that again should give me a more realistic view of the back without making objects small/large or causing distortion of distance judgment. And who knows, may be in a future, a more sophisticated model, I may add two horizontally placed cameras to feed the same one screen, an turning the system into a passive LG type 3D picture that doesn't need a 3D glass to see 3D!!!! In this scenario, do I need to connect both the red wires of the LCD and 2nd dedicated back camera mirror, to an IGN red wire from under dash fuse box? Thanks man and you are a good teacher.
Maybe something like this MC7101 video I did may be a more valid solution for you, Its all in one and the cameras are able to be viewed alone or split screen or or 3/4 or 4/4 on screen simultanously and can be switched manually or electronically with turn signals and reverse turn ons...
i did try to tap it to the signal light wire,what happened the monitor is blinking image too,do i tap it to the main signal line before the blinker relay switch, will it stay steady?
What if you did not want this camera connected to the reverse lights at all and just wanted it connected to a switch period? My car has trouble with the reverse lights, sometimes they work and sometimes they do not so I would want to do this without having to connect to the reverse lights at all.....Any suggestions?
Hi, thank you for sharing your information, is there any possibility that the camera/monitor get damage from two incoming power sources? For example, 12volt 6amp diode from the battery plus 12 volt 6amp diode from the reverse light. Let say the switch is turned on while in reverse gear at the same time. Is it necessary to add two 6 amp fuses after each diode? Is it safe for two powers to be on at the same?
hey i have a A4 03 3.0 can you provide me with which wire should i attach the camera , im saying this cause my audi have different colors of wires on the tail light
hello could you give us an idea how to make it work on to signal light as a blind spot like the honda accord 2015,will the monitor stay on and off blinking,how to do it please help.
No. It is just a tapped/jumped connection to (+) on tail light and it is not tail light's main power connection. Tail light is getting its power from a different source/switch that car has. Jumping to that connection is just providing you with a sense connection (when tail light is powered on).
It's there a way to connect the turn signals as blind spot to the monitor with out the reverse light to come on perhaps A (relay) thank you in advance.
hitman84e hi i think it will work,try to connect it to turn signal wire using a relay,the relay will designate different way the reverse and the turn signal without relay they will turn on both,
Question on the power wire. I connected the red and black to the reverse light. Red to power and black to the black wire on the light. I get video when I shift to reverse with the engine is off. But with the engine on the display scrambles. Should I have the black wire grounded to the truck?
If connected to the radio it will be on the backup display. You could put two toggle switches one for the receiver one for the camera but if you direct connect the camera to say the battery it will be on all the time and run your battery dead.
Rob - Yes, the right way is to power the camera (+) lead from the ACC (Accessory) Red lead on the wiring harness behind the radio. The camera (-) lead connects to Audio GND (black) lead on the wiring harness behind the radio. The radio and camera will power ON and OFF together, as a properly designed system. Yes, these two power wires to the camera will be long, but they will be free of large ground currents elsewhere in your vehicle that will cause image distortion and possibly loss of sync with the radio video decoder. The Reverse lamp (+) lead connects ONLY to the radio's Reverse In input, which signals it to display your camera image when your vehicle is in reverse.
A question,I want my camara to turn on when i put it on reserve,but also sometimes just to check what I have on my hitch carrier,not always being on,just sometimes turning it on,will it be all good?
Hi just watched this tutorial vid and it was great. I have a question. Instead of running an alternative 12v power supply to have a switch, Can also wiring the reverse camera to the Park lights and then turning the park lights on acts as the on/off switch for the camera? ( obviously the diodes will still be needed)
Oh come on. How long you been doing this? First off from the camera just hook up the red wire to the positive wire on the light that turns on when you put your car in reverse. Second run a wire from you units back up power, usually light purple with a stripe to the same hot wire. Camera can be turned on from the head unit will also automatically switch on when gear in placed in reverse. No need for switches or diodes. How silly.
So the power source for the camera it gonna be the source for the wire that says reverse on head unit so they can kick together when I put on reverse automatically please help thanks
Nice video ! Thanks for doing it! Here is my setup : Im running Front and Rear Cameras to Head unit utilizing both a toggle switch 2 Pole center off i.e. , ON/OFF/ON AND A SWITCH TO CONTROL Video feed and trigger the correct camera. The 2 Pole Toggle will control the front camera when I want it in the ON position constantly. I figure I need one diode at the Reverse Power on Tail light and one below the Head Unit where the diode makes contact with the trigger wires. The 2 Pole Toggle will have an adapt fuse before going to 12 Volts . The Head unit will also have an inline fuse to power . I have a schematic I could email if it would make life easier?Question : will 2 diodes be sufficient? Thanks Get Up and Go aka Papa
Hi. What will happen if you forget the switch in the ON position and you put car in reverse? I have 1 rear camera and 1 camera on my caravan. I want both to work from my reverse power but also want to toggle between the 2 while driving. What will happen if i accidently leave any one of them on and then activate reverse? Thanks
It would turn on anytime you used the switch. Effectively making it the same as a room with a light switch VS motion sensor. The switch adds a step but also versatility because you can turn it on when ever you want it.
If your switch is on when you go into reverse, you'll have an overvolt situation since both +12v sources will be in series with the head unit and the camera.. This is not the correct way to do this
Sean Sinay 12VDC plus + 12VDC = 12VDC, you can't produce overvoltage at the load with a 12VDC Source, hook up 12 different wires from source to load and you'll still have 12VDC
Thanks for the video! Even though this video is over 5 years old...I have a 2013 Silverado with the towing package. Will a 6 amp diode wired this way be sufficient if I'm towing a trailer with backup lights?
i was wondering can i just hook up the camera with out the reverse light ? i just want to turn it on when i need it i off road and need to see behind me and do i need a diode ? or can i just turn it on from 12 v ? so i think single pole switch to 12v then do i go to the stereo camera wire and then to the camera red and the camera ground to chassis ?thank you
I have a question I want to run back up camera constant on to my rearview mirror monitor but stil have my auto reverse "mode" displaying on my double din head unit while in reverse I know the is a solution with out having to run two separate cameras.. Pleas help!!
I have an after market rear view camera as well as a double din head unit.. Currently it auto engages when in reverse on my double din.. How ever I want it to run constantly on the rear view mirror monitor while I'm driving and stil be able for it to auto switch on my double din head unit when reversing
If you can email me a wiring diagram would be great and any extra items ie diodes or switches I'll be sure to order from your website .. My email is joetellem28@gmail.com
I hooked up my camera on an inexpensive DVD receiver. I hooked it all up. I am only able to see my camera when I click on the camera button on screen. It doesn't activate on reverse. I hooked it up to the cam in input on the receiver and to the back up lights. Is there anything I can do to activate directly after putting in reverse?
+luis razo Hi luiz is your camera is a reverse camera,if it is just connect the red wire to the reverse wire from the back wire orange of your dvd receiver and same lime connect it into reverse light red positive so when you put the car on reverse it will send signal to the monitor as well as your reverse light.
+luis razo your camera might be a photo camera it will work on video in, into your dvd receiver but not on reverse.cause i did change my factory radio receiver into a china cheap dvd receiver which i did try both
My humble opinion will be put a single pole swich to turn all , the camera , the reverse swicth of the receiver and dont hook it up to the reverse light. )the only thing it wiill turn on manualy with the switch.
im thinking about putting my back up cam on a switch, great video explaining it, but im more worried about the technical part, how would you wire in these diodes and protect them back behind the stereo? just solder and heat shrink?
Lessco Electronics makes sense...one other question, do you have to bring the camera power wire back to the splice with the diodes? or can you just wire it to the reverse light in the back? and if you could do it this way do you still do the double diode isolation off the tail light and the switch?
Skulskit Short answer: Yeah you have to bring it back. Long answer: If you wire it directly to the reverse light, your camera WILL get power. The problem is that if you don't bring the camera power wire back, your display WON'T get power and it WON'T recognize that the camera is on (it will think it's off). Therefore you will not see the camera's video on your display. Note: These backup cams are already designed in the simplest way possible, and there really aren't any shortcuts. If there was an easier way, they'd be doing it already.
Just an observation. You only need to diode isolate the reverse light wire. The other end of the overrride switch is at 12 volts so if you close the switch while the car is in reverse you get no current flow since the potential coming off the reverse wire and the switch is the same. Very well explained write up.
Yes, this configuration looks like you would have it on when in reverse as well as when you wanted to. For me, having it work with the switch only is fine.
Great stuff, but I think only 1 diode on the reverse trigger wire might be good if we are just trying to keep the back up light from going on when the switch is closed. Also, a fuse coming from the power source to the switch might be a good thing.
I thought this too but if you are using a switch with a light in it then that will illuminate when reverse is selected in gearbox. If you only want override switch to light up when using switch then double diode is necessary. This won't matter if it's a non illuminated switch though and a single diode can be used.
Can you do a diagram on how to wire it up on a switch without using reverse switch
@@Jpcars636 Just to clarify, are you saying you want the cam to work completely manually through a switch and not at all through the cars reveres light circuit?
@@s3uoq Right, I was speaking of a basic toggle. An illuminated switch or pilot light will light up from the reverse circuit. Not sure it would be as huge an issue as the back up light coming on but if it's not wanted then, yes, 2 diodes are needed.
@@rollingthunder1751 yes that’s better for me 👍
Every video is seriously pissing me off with this. If I never hook the power up to the reverse light how can you have a problem with it. All you had to say was dont plug it into the reverse light
Thanks for posting this video. It may be almost 6 years old but that doesn't make it any less helpful! After watching this video, I bought some 6 amp diodes from Lessco Electronics. I purchased a new head unit for my 2013 Silverado, and added a backup camera. I followed your instructions on your video and it works like a charm! Thank you!
How long did the shipping take? If you can remember.
thank you, i was trying to figure this out last night and felt like my brain was frying so i decided to take a break until today and this is exactly the problem I was having! thanks thanks thanks! I knew there was something i needed to add in line just had no idea what to do.
Ok i wired up completley like you said now i tapped the reverse and the switch wires after diode and ran the red to the reverse signal wire on the stereo is that wrong ? because i am able to get the camera to show u with the switch on AV but the review doest come on when i revers back up camera app stays dark no matter what i do
Won’t that trigger the stereo to turn on but not turn the camera itself on? Since the camera is only powered when the reverse bulb is lit?
That's the way I see it too. Where does the camera get power if the diodes are preventing power in that direction?
I wish someone would answer this question. I’m guessing there has to be another power source. Maybe the power wire that runs along the rca for the camera.
I installed dvn927bt with JBL adapter it whistles not all the time seems like it's only when it's quiet mostly because I probably can't hear it for the radio for DVD CD blah blah blah how do I get rid of that whistle I put a ground wire from the radio to the frame whistles still there it's just different wrench man 55 at yahoo.com
2016 or 2015 silverado I would say find a constantly on 12v like off
the battery put a diode on it and tie it in on 1739 (red) in the rear
body junction box with a diode to prevent it from going back up to the
ignition. Then find an always on neutral like off the battery and tie
it in on 24 (white) in the rear body junction box with dual diodes to be
safe (probably not needed since it is a neutral, but just to be safe
anyway) and then break that neutral thru your switch and it should power
the rear camera on and off thru your switch. Just my opinion, but
looks like it would work. 4 diodes 2 wires and a switch should put it
in business.
Sir, hi thank you for your video got better understanding now how to wire my camera using switch and diode. But one question on the 12V switch and 12V power coming from the tail light ...
1. How about if I forgot to turn off my switch and suddenly reverse my car, power supply from reverse light and my switch are both triggered? what will happen
2. My car still using halogen bulbs reverse light maybe about 21watts “guest only” what diode capacity is ideal?
3. hope you can help me to solve this question in my mind... thanks Anton
I'm watching a video that is 6 years old but I think it's going to help me
Why two diodes? Is the one on the switch loop actually necessary? What is its purpose? Please don't tell me you only explained it this way in order to goad ppl into buying more diodes from your websites? Please explain. I'm no expert I'm just saying I don't understand its purpose.
hi i learnt a lot from your videos please can you tell me what type of diodes to buy thanks for a great lesson cheers john
Looks like he got lost trying to explain (kiss) keep it super simple don't waste time going to taillight if your going to toggle switch just go direct power like you were kinda showing at the end when it looked like you erased your reverse wire but at the end you wanted the wire can we have a part 2 video showing it the simple way with just a toggle switch and if needed the diode for the diode can you use the one that resembles a fuse or is the size to big as it would be easy to crimp a fuse holder and put the diode in there last note check the camera angle (seems like this is your early days keep it up and you'll have a good following )
This is absurd !! Just connect the reverse wire from the head unit to the reverse wire in the car harness, then connect the red wire (12V) to the red wire on the head unit that is already connected to the accessory wire in the car harness.
This way the camera is on as soon as you turn the key. It will come on when you go into reverse, and also you can go into the head unit and switch to the rear camera input, and you can watch the rear when driving on the screen.
Done
Thats great dude, but not everybody has a dvd player. Why is it, no one can show a simple video on how to wire to your taillight?
I did exactly and it works but doesn’t show picture on the screen
Can't I just leave the reverse light circuit out of it all together and just wire it to power to turn on when the unit turns on ?
Just wanted to ask: Does your diodes overheat? Seems that without a resistor in series, a large current draw will occur?
couldnt you do the same basic thing, only bypass the reverse connection at the tail light, and run 12 volts thru the switch to the radio reverse, and the camera power? you would have to manually switch the camera on when going into reverse, but it eliminates the need for diodes as well as eliminates the need to tap into the tail light wires.
Sounds like alot of extra steps, but you can try it for yourself I suppose.
should use a lapel mike and slow down your speaking too
Hello, I have installed an Android Radio with rear view camera and this is exactly the problem I am facing right now. I don't want to switch on the camera in reverse but also manually while driving. The problem is known. Then the reverse gear lamp will light up too. I wanted to do the same with the diodes but I didn't know how. Your video explains a lot more. I already have a switch for my USB charger in the front. I would like to steal the 12+ from this switch and send it to the camera.
But what I don't understand is, why is it not enough to install a diode in front of the reverse lamp? do I have to install 2 diodes? Would there be a short circuit if I installed only 1 diode, because the 12+ goes from the reverse lamp to the switch? I happen to have an SR260 m10? diode. would that work too?
Instructions. Reverse taillight provides power to camera and must be connected to brown reverse wire of radio. Yellow rca camera to radio.black is Ground . I use ground of reverse light bulb.works fine. Put car reverse, radio switches to camera display
Dude , I don't care how old this video is - You are the MAN !!! Followed your tutorial to the T. Works like a champ first try.
All you naysayers need to take a hike . Relay SMELAY . When you turn it on it does NOT have a jerky turn on. It is a smooth as butter transition . If you know ANYTHING about electronics , this is what you want .
Thanks man I am HAPPY !!!
Question: you need a 6A 12 volt diode?
I like using a relay (SPDT) better than these diodes.
So this may be a dumb question, but why are the diodes necessary? I am wanting to use a toggle switch for on off function so I can view at any point while towing and using a small separate lcd screen for viewing. I am using an add a circuit in the fuse box to tap for power. Thanks for answers and pointers.
its is hooked up like the diagram but the red wire is going to my violet and white striped revers signal wire im thinking that may be wrong no clue why it only works in av mode not in back up camera mode i was thinking maybe because of my relay that allows me to watch video while in motion idk
Use the transmission reverse switch to activate the reverse camera and lcd.
Seems like an overly complicated way of doing things. This video suggests you need a switch and diodes (soldering, presumably) to arrange things, but I highly suspect that most head units (especially after-market) already have circuits in place to do this; just need to wire it correctly.
He is right that the radio will be "looking" for a 12v trigger for the back-up camera. So you have a choice. If you want the camera to be on only when in reverse, then you can share the same circuit with the radio and the reverse (lights). If you want to be able to view the camera whenever the car is on, then the camera must be supplied by accessory power (running lights will often be able to this). The radio should not share the same 12v reverse circuit in this case. For the radio to automatically switch to the camera when in reverse though, it still needs to be wired in to the reverse circuit.
so i got a 98 cav. bought a cheap radio cause i wasnt sure this would work anyway. on my video wire (yellow) each end has a red wire on each side which i assume is the 12 volt wire. i spliced this wire into the red wire on my pig tail of my radio which says its 12 volts. on the other end i dont know where to put it so i spiced into the red wire that draws power from the reverse light and i spliced the ground into the ground wire on my park lights. did i wire this wrong? needless to say it did not work.
Any chance you can do a tutorial on driving with backup camera not going off. I have a 2017 Chevy cruze and would like to figure out a way to wire a always going really cam so that as I'm driving I know what's coming up behind me or if there is anyone in the lanes I can't see.... Lol. Please your the best
Why does the taillight need to be wired in? Cant you just go + from bat -> switch, acc from switch -> camera + reverse signal wire, and ground both?
I have a rear view mirror with 2 channel video screen, 2 sets of rca wires and 2 sets of wires to activate the mirror channels. I already installed a back up camera to 1 channel that activates when in reverse only. I’m stumped because I want to instal the other camera to the bottom of the passenger mirror and I want to activate the camera to show the side image when I activate the right turn signal only . Can anyone show us the wiring diagram for this set-up? Thank you, I really appreciate anyone’s help.
My question is, if the Diodes are so cheap, and you always want to over kill with them, then why wouldn't you only carry 10amp Diodes? Or are they not "that" cheap?
to wordy, just get to it.
Great vid, learned a lot, thanks. Waiting for my cam and LCD to arrive. Dumb question, is the red wire to the DVD Receiver's "camera input" the actual signal feed or just the power? Have you just ignored the video cable between cam and monitor? Less dumb question, maybe:- I'd like to power mine from an ignition-on 12V to use as a rearview mirror replacement in a van, but I'm not sure if there is a source in the rear light assembly. Should there be one in there somewhere? If not, do you reckon it's ok to power it from the tail light rather than backup light? I'll then put the side lights (running lights) on to use the rear view. I don't want to have to run a ign-on cable all the way from the front.
What would happen, if the switch is on (+12V) and I go into reverse (+12V)? Do I have an overvolt situation (+24V, series circuit) or is this (at 09:57) a parallel circuit and I would still have only +12V? I don't want to damange my stereo or camera.
that cannot physically happen, its electrically impossible.
in this case without using the diode i would connect the camera straight to the battery power or to the remote power and connect reverse wire from the head unit to the reverse wire into the taillight reverse wire. you do not have to use any switch or diode
How to modify this scheme if I want use with an uvc usb camera attached to a tablet? There is an app that can launch upon connecting the camera. So back llight relay/switch part of the scheme should work. It is not clear for me how to switch on camera bypassing the reverse.
I really hope u can help. I installed a backup camera on my car. Connected red wire to taillight and black wire to what i assume is reverse trigger for the hu. When i put the car in reverse without connecting the video rca cable, the radio switches to a black screen where i assume the rearview would be if video cable was connceted. When i put the car in reverse with the rca connected, nothing happens. Help pls??!
Wouldn't you only need one diode on the tail light? If the switch is off isn't that acting as a diode and if its left on when in reverse I don't think it would hurt anything, because you would be adding voltage to account for any drop from the extra wires. Not that diodes are expensive and I like the idea of isolating things for safety, I'm just wondering if there is a need for it.
PLEASE REPLY ASAP!
Great video! I just liked & subbed! ------------- BUT! Now I have a question for ya! If I am not wanting the camera on anytime I want it, just when in reverse, could I tap into the reverse light pos and rev light neg wires at the light which is right next to the camera of course, then run the vid cable and the reverse signal turn on wire (if that is what the other wire even is? SEE other question below) to the head unit?
The reason I ask is before i found your video, i watched others that showed it done this way and i went ahead and run the wires as i wait for my head unit to arrive. Hoping I did not screw up and have to redo all i done because it was a pain in my 2011 prius to run the wires from the top of the hatch(where the tag is) down to the tail light then all the way to the front of the car!
Also just to be sure, the video rca cable also has a little red-pigtail on each end of it. ----- I could not find out for sure about this pigtail so to be safe i went ahead and ran another wire from the rear pigtail to the front pigtail,(the red short wire found on each end of the video rca cable) just incase i am right and this wire will be used to let the HUnit know when to switch to cam by connecting it to the wire labeled reverse on the hu's wiring harness. Am I right or am I all screwed up???
Thanks! PLEASE HELP!
I don't understand why you need a diode for the switch. If for some reason the switch was accidentally closed while you were in reverse, would it even matter, it's all positive current anyway ?
Hello there, aloha everyone! need some help here if any? I got one of those camera, and ive installed it, followed every single instruction for installation! I have a alpine ive head unit with a reverse trigger, i connected the camera power source to the reverse back up light, and the reverse trigger from the head unit to the + reverse back up light! In the morning is fine camera works ok, powers on when switch the gear to reverse and triggers the head unit to show the back up camera, but the problem is at night, yes! Its When i turn on the tail lights and step on the brake pedal, my head unit triggers to camera even gear is not on reverse, there is no image since camera on powers when i put the gear on reverse! So yeah at nigh when i turn on the tail lights and every time i step on break this happens, it triggers my head monitor in reverse, i tried and check all the wirings, and even replace all the tail light, brake signal light bulb new, but its weird when i remove one of the brake light bulb and turn the tail lights on and step on brake its doesnt trigger my head unit monitor to reverse,! Is there anything im missing? Really need help, thank u in advanced, mahalo!
Wouldn't i just skip tapping into the reverse wire in the tailight?
I don't need the camera to come on all the time when i reverse i will mainly need it for towing, so would i just be able to wire the camera power to the switch and call it a day? :)
I was thinking the same thing. Maybe this is done to reduce feedback, but I was thinking to just eliminate the reverse light wire tap and diode and just use one diode from the switch.
No, because when the camera comes on, it overrides every other function and takes over the screen. You don' t have access to any other functions, you just have the camera picture on.
U can have a multi screen for your camera
I think this is more complicated than simply using a Single Pole Double Throw toggle switch. You also get the option of being able to turn it off all together. Thanks anyhow.
How about back up camera wired to monitor on dash for use during driving.
But splitting to a 2nd monitor when parked with 2nd monitor in the back?
I have a van I am going to be staying in on business trips and would like option to use the cameras as security cameras to see outside when in the back
Ideas?
I have a 528i bmw,just installed 8.8 nav screen with can bus box..it has all kinds of ass wires..do I still need to cut wires?
I purchased a Chines unit S160 for my 2013 Ford Escape and I want to hook up my back up camera but the unit has 4 wires one is RCA for camera in and I have three other wires a BLACK RAD AND GREEN REVERSE I know that I have to hook up the reverse wire to the back reverse rad wire but what abut the other two, do I hook up the rad wire with the green and the rad from the back together and the black to the ground ?
depends, what model camera is it, that will matter alot
It's worth noting a lot of current stereos that can be used as a back up camera, have an input from the reverse lights, and an output to power up the camera. Stops this convoluted route with diodes, and simplifies the whole install.
single pole double throw is simpler. no need for diodes. youre already going to put a switch in so just go with the spdt. you even said "diodes get hot" diodes get hot = more likely failure.
the only benefit to this is if the switch fails you will still get the camera in reverse. if the spdt fails. you have no camera.
diodes cant be replaced by a spst relay.
He said SPDT switch. Are you insinuating voltage could jump between the poles of the switch? Camera and monitor on the common, 12V ignition and reverse lights on the switching poles. Unless power jumps through the switch, you're isolated. Sorry, but you're thinking way too much into this.
Exactly what I wanted. However if I am going to add a second LCD screen (A 5 or 7 inch el chepo chines), dedicated to for the Second reverse camera! Wouldn't that be a good idea, for all time electronic rear view mirror, as my truck gives me very poor coverage through optical mirror (Lifted truck and what not). I ask this because of many reasons. First the current back up camera has Wide angel lens so really not suitable for permanent view and then has those not needed Stop / Waring lines for parking. Then By not messing with car's OEM system, I may cause less chance of damage to the HU, and camera that are going to be one 24/7, when car running. Additionally beside choosing a camera that has closer to normal human eye field of view, I am going to hang it on top of the back of the car or behind the rear glass, and not low, at bumper level, that again should give me a more realistic view of the back without making objects small/large or causing distortion of distance judgment. And who knows, may be in a future, a more sophisticated model, I may add two horizontally placed cameras to feed the same one screen, an turning the system into a passive LG type 3D picture that doesn't need a 3D glass to see 3D!!!! In this scenario, do I need to connect both the red wires of the LCD and 2nd dedicated back camera mirror, to an IGN red wire from under dash fuse box? Thanks man and you are a good teacher.
Maybe something like this MC7101 video I did may be a more valid solution for you, Its all in one and the cameras are able to be viewed alone or split screen or or 3/4 or 4/4 on screen simultanously and can be switched manually or electronically with turn signals and reverse turn ons...
He is a salesman, a bad one. Even had to read off the paper a double pole single throw lol. So why not a relay?
Used this yesterday to wire up reverse camera with override switch and worked perfectly. Cheers 👍
Next video...How to properly setup your camera to film you how to video
i did try to tap it to the signal light wire,what happened the monitor is blinking image too,do i tap it to the main signal line before the blinker relay switch, will it stay steady?
How to i hookup my joying double din to my 2012 honda crv steering control
Probably one of the more informative videos I've seen actualy learned what a diode does and it's application very professional al stuff here thumbs up
What size diodes should I use for a chevy traverse 09?
What if you did not want this camera connected to the reverse lights at all and just wanted it connected to a switch period? My car has trouble with the reverse lights, sometimes they work and sometimes they do not so I would want to do this without having to connect to the reverse lights at all.....Any suggestions?
tmacc100 sure, thats fine too. just do it the way you explained
Hi, thank you for sharing your information, is there any possibility that the camera/monitor get damage from two incoming power sources? For example, 12volt 6amp diode from the battery plus 12 volt 6amp diode from the reverse light. Let say the switch is turned on while in reverse gear at the same time. Is it necessary to add two 6 amp fuses after each diode? Is it safe for two powers to be on at the same?
This is a good question.
hey i have a A4 03 3.0 can you provide me with which wire should i attach the camera , im saying this cause my audi have different colors of wires on the tail light
+Angel Black Thanks for asking! Here is custom made answer: ua-cam.com/video/-21cRVZqUJU/v-deo.html
OK, great Vid, I went to your website but don't know what size diode I need, please help
hello could you give us an idea how to make it work on to signal light as a blind spot like the honda accord 2015,will the monitor stay on and off blinking,how to do it please help.
SIBLE YAMASID Ill look into it.
Rocket science it ain't. Run a red and black 12v to a toggle.
Also, with your last picture, seems with the placing of the tail light Diode, would prevent that tail light from working at all, correct?
No. It is just a tapped/jumped connection to (+) on tail light and it is not tail light's main power connection. Tail light is getting its power from a different source/switch that car has. Jumping to that connection is just providing you with a sense connection (when tail light is powered on).
It's there a way to connect the turn signals as blind spot to the monitor with out the reverse light to come on perhaps
A (relay) thank you in advance.
hitman84e hi i think it will work,try to connect it to turn signal wire using a relay,the relay will designate different way the reverse and the turn signal without relay they will turn on both,
can you make a diagram using a tablet instead of a regular head unit.
@5zXM
do you know whats going on with my camera?
Question on the power wire. I connected the red and black to the reverse light. Red to power and black to the black wire on the light. I get video when I shift to reverse with the engine is off. But with the engine on the display scrambles. Should I have the black wire grounded to the truck?
+Wolf Schwurack sounds like it, either that or the rca / video cable is insufficient.
thanks for your reply
why not leave the backup camera on all the time while driving ?
If connected to the radio it will be on the backup display. You could put two toggle switches one for the receiver one for the camera but if you direct connect the camera to say the battery it will be on all the time and run your battery dead.
Rob - Yes, the right way is to power the camera (+) lead from the ACC (Accessory) Red lead on the wiring harness behind the radio. The camera (-) lead connects to Audio GND (black) lead on the wiring harness behind the radio. The radio and camera will power ON and OFF together, as a properly designed system. Yes, these two power wires to the camera will be long, but they will be free of large ground currents elsewhere in your vehicle that will cause image distortion and possibly loss of sync with the radio video decoder. The Reverse lamp (+) lead connects ONLY to the radio's Reverse In input, which signals it to display your camera image when your vehicle is in reverse.
ramzan car tape EFI computar repareng cantar
To those who suggest running constant 12v to the camera, you cant do that to certain cameras with leds built in them.
A question,I want my camara to turn on when i put it on reserve,but also sometimes just to check what I have on my hitch carrier,not always being on,just sometimes turning it on,will it be all good?
SPDT switch. No diodes. Done.
JUST CUT THE REVERSE WIRE IN HAFT, PUT ONE DIODE BETWEEN AND YOU ARE DONE...
how about 4 cameras to stay on all time in cargo monitor, using just the same rear camera as a backup camera with a switch to the head unit?
Hi just watched this tutorial vid and it was great. I have a question. Instead of running an alternative 12v power supply to have a switch, Can also wiring the reverse camera to the Park lights and then turning the park lights on acts as the on/off switch for the camera? ( obviously the diodes will still be needed)
sure, no problem there.
good idea if you have a lift tailgate lam using a wireless camera.
Oh come on. How long you been doing this? First off from the camera just hook up the red wire to the positive wire on the light that turns on when you put your car in reverse. Second run a wire from you units back up power, usually light purple with a stripe to the same hot wire. Camera can be turned on from the head unit will also automatically switch on when gear in placed in reverse. No need for switches or diodes. How silly.
Your reverse lights will be on any time your camera is on if you wire it the way you suggest.
Nope they are not.
So the power source for the camera it gonna be the source for the wire that says reverse on head unit so they can kick together when I put on reverse automatically please help thanks
What type diode do ya need
a standard 1 amp in1005 diode
@@Lesscoelectronics thanks mate
Thank you, I needed to join the three cables together for my install to work. Good I found your video.
Nice video ! Thanks for doing it! Here is my setup : Im running Front and Rear Cameras to Head unit utilizing both a toggle switch 2 Pole center off i.e. , ON/OFF/ON AND A SWITCH TO CONTROL Video feed and trigger the correct camera. The 2 Pole Toggle will control the front camera when I want it in the ON position constantly. I figure I need one diode at the Reverse Power on Tail light and one below the Head Unit where the diode makes contact with the trigger wires. The 2 Pole Toggle will have an adapt fuse before going to 12 Volts . The Head unit will also have an inline fuse to power . I have a schematic I could email if it would make life easier?Question : will 2 diodes be sufficient? Thanks Get Up and Go aka Papa
Plz email me diagram
Hi. What will happen if you forget the switch in the ON position and you put car in reverse? I have 1 rear camera and 1 camera on my caravan. I want both to work from my reverse power but also want to toggle between the 2 while driving. What will happen if i accidently leave any one of them on and then activate reverse? Thanks
Can't you just run fused 12 volt power to the camera and monitor on a switch and skip the reverse lights and diodes?
You can, but then the camera/monitor wouldn't automatically turn on when you put the car in reverse.
It would turn on anytime you used the switch. Effectively making it the same as a room with a light switch VS motion sensor. The switch adds a step but also versatility because you can turn it on when ever you want it.
If your switch is on when you go into reverse, you'll have an overvolt situation since both +12v sources will be in series with the head unit and the camera.. This is not the correct way to do this
Sean Sinay 12VDC plus + 12VDC = 12VDC, you can't produce overvoltage at the load with a 12VDC Source, hook up 12 different wires from source to load and you'll still have 12VDC
+George S Correct, 12v positive is 12v positive.
Thanks for the video! Even though this video is over 5 years old...I have a 2013 Silverado with the towing package. Will a 6 amp diode wired this way be sufficient if I'm towing a trailer with backup lights?
What's your verdict?
@@pterodox123 Working great! No problems.
@@Jack-gu7rr awesome, thanks! I'll go with two 6s!
i was wondering can i just hook up the camera with out the reverse light ? i just want to turn it on when i need it
i off road and need to see behind me
and do i need a diode ? or can i just turn it on from 12 v ?
so i think single pole switch to 12v then do i go to the stereo camera wire and then to the camera red and the camera ground to chassis ?thank you
sure, thats ok to do as well, it doesn't have to be complicated, But if it ever does, I'm your man!
thank you so much for your wisdom
Can a wifi camera be powered by connection at license plate light for constant power while lights are on? thanks
no, but you can tap onto the running / parking lights though
Why not from the licence plate light? Camera+wireless sender uses about 0.2amps.
I have a question I want to run back up camera constant on to my rearview mirror monitor but stil have my auto reverse "mode" displaying on my double din head unit while in reverse I know the is a solution with out having to run two separate cameras.. Pleas help!!
+Joe Tellem youre talking about 2 screens simultanously, which one did you want to override?
I have an after market rear view camera as well as a double din head unit.. Currently it auto engages when in reverse on my double din.. How ever I want it to run constantly on the rear view mirror monitor while I'm driving and stil be able for it to auto switch on my double din head unit when reversing
If you can email me a wiring diagram would be great and any extra items ie diodes or switches I'll be sure to order from your website .. My email is joetellem28@gmail.com
whats the models of the 2 monitors?
Noisy shoes
I hooked up my camera on an inexpensive DVD receiver. I hooked it all up. I am only able to see my camera when I click on the camera button on screen. It doesn't activate on reverse. I hooked it up to the cam in input on the receiver and to the back up lights. Is there anything I can do to activate directly after putting in reverse?
I have the same issue did you figure out something please help
+masses yozd I have the same issue guys have you figured out how to fix please
+luis razo Hi luiz is your camera is a reverse camera,if it is just connect the red wire to the reverse wire from the back wire orange of your dvd receiver and same lime connect it into reverse light red positive so when you put the car on reverse it will send signal to the monitor as well as your reverse light.
+luis razo your camera might be a photo camera it will work on video in, into your dvd receiver but not on reverse.cause i did change my factory radio receiver into a china cheap dvd receiver which i did try both
On your last drawing where you have "camera input" do you mean where the camera inputs signal to the screen?
+my cats there's just one input that is from the camera to the screen. Am I missing something?
I was thinking of it as output because it puts signal out to the screen. LOL. So signal input from camera to screen output.
Camera input (sends the signal IN TO MONITOR)
Not shouting just emphasizing how to think about it!
Thank you for the video Martin. Great info.
i have a 94 astro and im trying to change out my rear view camera please help
+Luis Santiago tell me how I can asssist
+Lessco Electronics
I need to wore my 94 astro van back up camera
Thanx
What amp diode is recommended?
I use 5 amp diodes usually
Thank you for the info
My humble opinion will be put a single pole swich to turn all , the camera , the reverse swicth of the receiver and dont hook it up to the reverse light. )the only thing it wiill turn on manualy with the switch.
i did my from in side of my car never from the reverse lights there is a wire in side the cab that does the same things has the reverse
lights do
Can I use method for backup sensors while driving to detect cars behind for blind spots?
im thinking about putting my back up cam on a switch, great video explaining it, but im more worried about the technical part, how would you wire in these diodes and protect them back behind the stereo? just solder and heat shrink?
Tape is fine, but heat shrink is an even better option.
Lessco Electronics ok thanks! and how come you only sell the 6A diodes in a 10 pack?
I do 10 packs cause if I sold onsie, twosies Id lose $ after shipping little things like that.
Lessco Electronics makes sense...one other question, do you have to bring the camera power wire back to the splice with the diodes? or can you just wire it to the reverse light in the back? and if you could do it this way do you still do the double diode isolation off the tail light and the switch?
Skulskit
Short answer: Yeah you have to bring it back.
Long answer: If you wire it directly to the reverse light, your camera WILL get power. The problem is that if you don't bring the camera power wire back, your display WON'T get power and it WON'T recognize that the camera is on (it will think it's off). Therefore you will not see the camera's video on your display.
Note: These backup cams are already designed in the simplest way possible, and there really aren't any shortcuts. If there was an easier way, they'd be doing it already.