DEAN I WAS HAVING ISSUES WITH MY RCA OUTPUTS ON MY KENWOOD DNX576S WHEN I PLUG THEM IN THEY WOULD ONLY PLAY OUT OF 1 SPEAKER AND IT WAS REALLY LOW AND JUST SOUNDED TERRIBLE, SO I CAME ACROSS A VIDEO YOU MADE OF DIFFERENT WIRES THAT CAN GO FROM RCA TO SPEAKER WIRE WHICH GAVE ME THE IDEA TO CUT MY KNU CONCEPTS KRYSTAL 4 CHANNEL RCAS AND CONNECT THEM TO MY HEAD UNITS SPEAKER WIRES IT SEEMS TO BE WORKING FINE I HOPE THIS DOESNT CAUSE ANY ISSUES DOWN THE ROAD. THANKS MAN YOU AND CAR AUDIO FABRICATION ARE THE BEST OUT THERE.
No technically what you did is okay but not optimal! It’s cool to do I guess if your in a pinch! Definitely better than nothing however, in lies the problem in which most aftermarket head units sending the audio signal thru their speaker wires(high level outputs) which you resorted to using vs the low level rca outputs, this will cause your speakers to begin to clip(distort) usually at the headunits 3/4 volume level! This is the main reason for using the rca outputs of the headunit to achieve the highest volume and sound quality free of distortion in most cases! For example, my pioneer single din, the volume maxes out at level 62, but the radio begins to clip at anything above 50 when the four colored traditional speaker outputs are in use! However, when sending the audio signals to my amps I’m able to get to 61/62 when using the rca output without any clipping. If I try to go to max 62/62 then it will clip even on the rca’s that’s the trend with these radios. So with that information I hope you can be more aware of your system and electronics to prolong the life 🤓
Hey Dean great and informative video I was wondering if one of the newly created aux lines from the relay could be used as a keyed trigger for a larger relay fused grounded and ran to an aux fuse block thanks in advance
Thank you for the great video. I’m trying to tap into the dome light of the car to hook up some led board lights on my truck. How can apply a relay in this situation when I only have one wire from the harness to connect? Do I really need a relay? The lights are 3w each Im doing 6
I have a couple questions the first one is what type of relays do you recommend (brand)? Second one is where do you buy your wire from they type you use on your relay. Any info would be appreciated.
Hi. I understand your video when I'm only powering two 12v devices, e.g. camera and audio headunit. But what if I have three? Rear camera, audio headunit, and a underseat active speaker.
Can this be used to install aftermarket led angel eyes and trying to get power from sock angel eye connector? I assume I would have to run a 12v constant wire from battery to relay, as well get + power from stock connector? It is for a 328i BMW with stock angel eyes but upgrading to led rings.
Do you need to fuse the new accessory wires? Say for the back up camera or the wires for remote turn on of multiple amps? It seems like those wires are now un-fused...at least from the point of the relay to the actual devices.
Thx u for the schooling watched it like five time as I'm trying it and watching alone thx u......I have a question what if u have three amps the deck and a back up camera what then........? Put five wires coming out, instead of two?
Got a serious question, I was wiring up my relay and the relay bumped the side of the radio and the radio cut out and wont come back on, I've checked all the fuses and those are good, can you tell me what may be wrong?
Hello Dean ! I have a sound system at home that whenever I turn on/off it make a loud pop/Thump. I was told by a friend to install a relay !! do you think this relay would work ? Thanks a bunch
Awesome video! LIKED and SUB! I have a quick question. I am currently using ACC wire to power both a backup camera and iDatalink Maestro RR and need to add a relay. In your video, you have a double feed on pin 30. If I want to use the relay to power both backup camera and Maestro do I have to add 3 leads to pin 30 or can I solder both wires from camera and Maestro to the extra lead? Thank you very much.
You can put 8 amps without putting a relay the relay will actually draw more power than a bunch of amps. I would only install a relay for powering fans and leds with the remote circuit
Great video Dean. I have a technical question about my personal stereo install and it's to much to try and ask in the comments but would it be possible to call your shop? Keep up the great videos.
Cool I want to do this but have a question what if I have a headunit, backup camera and also want to add a relay for my capasitor, 2amps and a fan. Can I use 2 relays to do the same thing you did but all together in one harness.
Correct me if I’m wrong but can you also install a relay at rear of car? By connecting constant directly to battery (insinuating ones in rear) and wiring remote and ground accordingly?
It depends on current draw. Most relays will hand up to a 30 amp draw. So for example if you have 4 amps, a power antenna, and 4 fans 1 relay will do the job.
@@FiveStarCarStereoIncI am running two amps and I am going to run LEDs and a fan. can I hook #87 to distribution block for power instead of radio harness and do I need fuses if so what size and where
Hi, I know that you guys are really knowledgeable. I’m looking to pick up a 4200 NEX but I want to have the backup camera always be able to be on as well as switch to it when the car is in reverse. How does the radio need to be wired? Do you still have to wire the 4200 NEX to the brake lights to get this working? Seems when I was reading online you can connect the camera reverse wire to the 4200 NEX and it has software to be able to let you still view the camera any time you need to without being in reverse. Is this true?
Yes you will still need to connect to the reverse wire.There is a setting in the you can turn on to view the camera all the time. Check out this video ua-cam.com/video/TDOXNEh1eH4/v-deo.html
I have a Kenwood double din radio. The aux AV input is not working for what I want. I am trying to screen mirror my phone, but it is not working. Used a CA-C3AV adapter and nothing but blurry image. Tried another and same thing. Wondering if I could wire up a relay system of some sort to use the camera button as a double function, screen mirror when not in reverse, but backup cam when put into reverse. Please help...and thank you for the vid on the F-150 with Pac Pro4 video. Made my life a lot easier when I installed my Kenwood. Got out of doing car audio almost 13yrs ago. Did it for 10yrs myself at different places.
Basically looking at putting a y connector on the camera input, using bluetooth audio for sound and cam button for video, and still being able to retain the backup camera when put into reverse.
Sorry for the multiple replies, looking to split the RCA to the tip and outside ring on a relay, that will somehow trigger once in reverse to turn on camera (possibly on another relay), but screen mirror my phone when I hit the cam button on the Kenwood using bluetooth for sound when camera is not put in reverse.
Good video but u got to step it up to 5 amps in the back front and back up cameras and side mirror cameras fans 13inch kenwood deck ok ok it's a 10 inch kenwood but I keep it clean lol head rest and visors monitors now what
Can I daisy chain my amplifier’s remote wires and just have a single remote wire to the relay? Instead of having two remote wires like you have in the video? Or is that going to cause a problem?
If you were to hook up a relay for your amps can you 1) get the power and ground from a distribution block running just the remote off the deck and 2) can you run your backup camera power and ground off same distribution block?
Now quick question, I already use a 40 amp relay, which powers my 2 amps, aswc steering wheel control, and the antenna wire.. Can I add my camera power wire to relay instead of tapping into red wire on pioneer 5100??
Steven Chua the remote wire out of the radio will not need a fuse. You would want to put the fuse on the feed wire for the relay( the yellow in the video). Keep in mind if you are using the wires behind the radio they are fuse by the cars fuse box.
3:15 It may be splitting hairs, but it's an increase in CURRENT not voltage you're after. You said it twice, but I know you know better. :-) Good video!
@firebirdude2 is NOT splitting hairs. Amps and Volts are two DIFFERENT things, but related to each other through a simple 3rd grade equation. The most basic fundamental equation of electricity v = ir Volts = Current (amps) x Resistance (ohms Ω) I am always flummoxed by the complete and utter ignorance of people that know nothing about the nature of the devices and contraptions that surround them in their daily life, for instance most people can't explain the difference between AC 120 volts from a transformer feeding a light switch in their home and a 1.5 DC volt AAA battery. If you were to use a hose and a water pump the analogy to v = ir is: Pressure = Flow times the Restriction Up the pressure (volts), you get more amps. But in a car the volts stays at 13.6 (while the battery is charging) so the only way to change the amps is to reduce the resistance. The output voltage of the accessory wire does not change. Resistance is given off as heat at the rate of the square of current i^2r. Heat degrades or melts insulation that causes short circuits. Fuses and circuit breakers protect against short circuits. Wire has resistance. A larger wire diameter wire is required, like a hose, to reduce its resistance. The smaller and longer the wire is, the more voltage drop occurs -- a thin wire has lower voltage on the load side than on the supply side. The more current the load pulls, the greater the voltage drop. If a backup camera only requires milliamps to operate, a relay probably isn't required. The significance of a relay is a tiny amount of current (milliAmps) in two small control signal wires to pins 85 & 86 turns off and on a much larger current through larger wires at pins between 30 & 87 or 30 & 87a in a Bosch-type Single Pole Double Throw (SPDT) Form-C configuration. This relay configuration occurs in many, many locations; for the ignition system, engine control module (ECM), powertrain control module (PCM), starter motor, fuel pump, fuel injector system, head lights, horn, brake & parking lights, windshield wiper motor, power door locks solenoids and power seats/sunroofs/power window motors both use dual (2) relays to reverse direction by switching polarity, heated seats, alarm, defrost/heat fan motor, radiator fan motor, A/C clutch, radio and antenna motor, subwoofer amplifier, trunk lid opener, fuel door, cigarette lighter/power port, rear window defrost, windshield washer pump, trailer brake, trailer lights, trailer battery charge, accessory delay, airbag, Anti-Lock Brake System (ABS) Pump, reverse backup light beeper, air suspension pump, fog lights/LED auxiliaries.
I'm trying to hook up a backup camera on a BMW 08 e90, I have the relay hooked up, main power coming from the battery.. Problem is it works fine while the motor is off still but, when the motor is on the backup camera works for 6 seconds and then the screen goes black and the relay starts buzzing
Yeah, where do I put the relay? I have no room behind my radio for the relay and I also have a window antenna that's only accessible from behind the radio..
I use to wireing the back up camera red to red on tail light and back to gound then yellow to yellow run yellow end to head unit and then conect tailight reverse to head unit reverse the video on screen
Okay, so I have a garmin backup camera that I am adding to the back of my vehicle. The vehicle cuts voltage when it senses something is attached to my reverse light power current, not allowing the backup camera to engage. How can I install a relay for this? Basically the wireless camera needs a 12v current to power up in order to immediately send input to my GPS screen.
Correct me if I'm wrong but isn't pin 30 the main 12v source so that was pin 87 gets power when the relay is active and pin 87a get power when the relay is not activated?
There would be no problem. The relay would only be needed in cars with a low Acc power output our if you were doing multiple devices on the Acc.( example overhead, power ports, 2 cameras)
@@FiveStarCarStereoInc can that 12v acc turn on 4 amplifiers? or does it need a relay? in my other car i had the 4 amps on the remote wire without a relay, had that for about 4 years with no problems
Í use a 3Sixty.3 DSP, and 8 out of 10 it kicks everything in, as it uses its remote turn on. I think the HU has one also(2 amps), but if I do the ignition turn on quick, the car and the HU turn on, but the rest, the amps don't kick in. Even the DSP remote bass control lights are not on. DSP I think fails to boot properly. Would this help that situation?
He's not "creating" a remote turn-on. He's increasing the current capacity of the remote turn-on that comes from the head unit. The second part was the same situation, but with an ignition wire. Also, this is a SPDT 12V relay. There are many designs. Many will work, but many are overkill. In fact, a SPST relay would have worked for this case.
It can be used to turn on many many amplifiers. A standard Bosch SPDT automotive relay is good for 30+Amps of current. An audio amplifier takes anywhere from 3-40mA of current to power up. In other words, you could turn on nearly 100 amplifiers with that one relay.
If you're asking about the remote turn-on wire, you can try looking in the head unit owner's manual. If you're asking about a wire in the vehicle, it's more difficult. You MIGHT be able to find that info from an online resource like AllData or Directechs, but they generally don't list that unless it's something out of the ordinary. You can track down which fuse it's connected to in order to get a rough idea. Also, the wire gauge itself would be a clue. A skinny 20awg wire isn't going to carry the amperage that a 12awg on would, for example.
firebirdude2 so if for example i have a 15 amp remote wire i can run 3 5 amp items or how do i divide the amps properly for like a power stripe and bridg e them the 1st one will have more power or will it divide by the pool of the load ?
wait what? I get a Free relay? I was only just saying it looks like a relay for a motor control for an assembly line. I'm sure that manufactures use relay designs for different purposes. I meant no offense.
3.6L Dodge Avenger non taken, I went and looked at the relays you were referring to. They look like big versions for of the ones we use. Very cool. Last year I had to replace a AC on one side DC on the other for my Air conditioner, I never knew they made such a thing.
Short video tutorial from a car audio master installer but the content is everything you need for bypassing e brake for head unit and your remote turn on for amps and a backup camera install thanks sir dean and i cant believe there are dumb as%%^&£€ who gave thumbs down to this tutorial
You're still using ONE 12v power line from .. wherever. Dont you want a 'bigger' power line to power accessories? Or, is this ONLY for turning on amps, not 'powering' them.?
speaker zedan it allows you to take a low amperage circuit and turn on a switch to a higher amperage circuit. So for example if you had a 1 amp output circuit and you needed a 10 amp circuit, you would add a relay. This is the most common use for it in car audio.
+speaker zedan Go to *www.bcae.com* (Basic Car Audio Electronics). See Topic #36 on Relays located in the menu on the right-hand side of the page. There are Diagrams & Photos to illustrate Relays & How they Work on the web page.
Yet another video perfectly explaining the function of a relay...but failing to explain how a 2-4 gauge amp wire connects to a tiny relay! ...I'm going to see how the starter relay works on my truck..because that is also a 2-4 gauge wire.
+Five Star Car Audio IMPORTANT! Dean, you left out an important detail !!!: You need to put a "QUENCHING DIODE" or Suppression Diode in Parallel with the relay coil (Between Contacts #85 & #86) to suppress any Back EMF (which can be up to 200 volts!) from damaging the attached components! See Topic #36 on Relays and then scroll down the page at *www.bcae.com* There are Diagrams & Photos to illustrate this on the web page, but Here is what it says... *** Quenching Diodes: Anytime that a relay coil is driven by a circuit that is not specifically designed to drive a relay, you should use a quenching/suppression diode connected in parallel with the relay coil. The diagram below will show the connection of the diode. Initially, you may think the diode serves no purpose because the voltage applied to the relay cannot pass through the diode. This is true when the relay is energized. The diode comes into play When the Power s Source is Removed from the Relay Coil. When power is applied to the relay coil, a magnetic field is created and energy is stored in the coil. When power is removed, the magnetic field collapses causing a reverse voltage to be generated (it's called inductive kickback or back EMF). The back EMF can easily reach 200 volts. The diode will absorb the reverse voltage spike. This voltage, if not absorbed by the diode, will cause premature failure of switch contacts and may cause the failure of power switching transistors. You can use virtually any type of rectifier or switching diode, i.e. 1N4001, 1N4002, 1N400x... or Radio Shack part No. 276-1101, 276-1102, 276-1103, 276-1104.***
awesome tutorial man, this is the most clear way of showing us Do it your self guys how its done.
pls help me what amps of relay i will use in 1.5 h0rse power car cash
DIYSG?
DEAN
I WAS HAVING ISSUES WITH MY RCA OUTPUTS ON MY KENWOOD DNX576S WHEN I PLUG THEM IN THEY WOULD ONLY PLAY OUT OF 1 SPEAKER AND IT WAS REALLY LOW AND JUST SOUNDED TERRIBLE, SO I CAME ACROSS A VIDEO YOU MADE OF DIFFERENT WIRES THAT CAN GO FROM RCA TO SPEAKER WIRE WHICH GAVE ME THE IDEA TO CUT MY KNU CONCEPTS KRYSTAL 4 CHANNEL RCAS AND CONNECT THEM TO MY HEAD UNITS SPEAKER WIRES IT SEEMS TO BE WORKING FINE I HOPE THIS DOESNT CAUSE ANY ISSUES DOWN THE ROAD. THANKS MAN YOU AND CAR AUDIO FABRICATION ARE THE BEST OUT THERE.
No technically what you did is okay but not optimal! It’s cool to do I guess if your in a pinch! Definitely better than nothing however, in lies the problem in which most aftermarket head units sending the audio signal thru their speaker wires(high level outputs) which you resorted to using vs the low level rca outputs, this will cause your speakers to begin to clip(distort) usually at the headunits 3/4 volume level! This is the main reason for using the rca outputs of the headunit to achieve the highest volume and sound quality free of distortion in most cases! For example, my pioneer single din, the volume maxes out at level 62, but the radio begins to clip at anything above 50 when the four colored traditional speaker outputs are in use! However, when sending the audio signals to my amps I’m able to get to 61/62 when using the rca output without any clipping. If I try to go to max 62/62 then it will clip even on the rca’s that’s the trend with these radios. So with that information I hope you can be more aware of your system and electronics to prolong the life 🤓
Hey Dean great and informative video I was wondering if one of the newly created aux lines from the relay could be used as a keyed trigger for a larger relay fused grounded and ran to an aux fuse block thanks in advance
Excellent video, thanks a lot.
This helped me so much. Thank you
Thank you for the great video. I’m trying to tap into the dome light of the car to hook up some led board lights on my truck. How can apply a relay in this situation when I only have one wire from the harness to connect? Do I really need a relay? The lights are 3w each Im doing 6
Thanks to this video I was able to connect my backup camera today. Thank you. God bless you.
Guillermo Calix cool, glad we could help. Thank you
I have a couple questions the first one is what type of relays do you recommend (brand)? Second one is where do you buy your wire from they type you use on your relay. Any info would be appreciated.
Awesome this was really helpful i did it myself now my amps are working properly
+Anivalteddy Cervantes cool!
what connectors are you using to plug the wires into the relay
Hi. I understand your video when I'm only powering two 12v devices, e.g. camera and audio headunit. But what if I have three? Rear camera, audio headunit, and a underseat active speaker.
Can this be used to install aftermarket led angel eyes and trying to get power from sock angel eye connector? I assume I would have to run a 12v constant wire from battery to relay, as well get + power from stock connector? It is for a 328i BMW with stock angel eyes but upgrading to led rings.
this video is so underrated!!!!!!
Awsome thx u .....ok I got a kenwood dmx 12...something lol I got to hook up three amps a crossover and a back up camera how do I do that I'm lost
Do you need to fuse the new accessory wires? Say for the back up camera or the wires for remote turn on of multiple amps? It seems like those wires are now un-fused...at least from the point of the relay to the actual devices.
Thx u for the schooling watched it like five time as I'm trying it and watching alone thx u......I have a question what if u have three amps the deck and a back up camera what then........? Put five wires coming out, instead of two?
How can I make my alarm led power a led strip or can I do this to make it put out more voltage and how would I do it if it only has wires
I’m running a 4 channel amplifier, mono amplifier and epicenter. Do I have to fuse all 3 remote wires independently coming out of the relay?
Got a serious question, I was wiring up my relay and the relay bumped the side of the radio and the radio cut out and wont come back on, I've checked all the fuses and those are good, can you tell me what may be wrong?
What kind of relay is it how many amps how to is great knowing what to buy would help too
Hello Dean ! I have a sound system at home that whenever I turn on/off it make a loud pop/Thump. I was told by a friend to install a relay !! do you think this relay would work ?
Thanks a bunch
I am doing the lcgm29 on my sierra would I be gettting a 12 volt power source and add it to relay for constant power ?
Awesome video! LIKED and SUB! I have a quick question. I am currently using ACC wire to power both a backup camera and iDatalink Maestro RR and need to add a relay. In your video, you have a double feed on pin 30. If I want to use the relay to power both backup camera and Maestro do I have to add 3 leads to pin 30 or can I solder both wires from camera and Maestro to the extra lead? Thank you very much.
awdieee thank you very much! Yes you can connect all 3 leads to the relay no problem.
What do you do with that silver tab on the relay?
Good video. Do you need a relay when you are only needing the amp turn on for 2 amps? A mono amp and a 4 channel amp.
You can put 8 amps without putting a relay the relay will actually draw more power than a bunch of amps. I would only install a relay for powering fans and leds with the remote circuit
Hey Dean, what if your only connecting a 13.3 inch screen radio, extra speaker, backup camera, and remote turn on????
My question is how many car amplifiers can you hook up to one relay powered by the radio remote wire
Can i do the same with a ford expedition one in the same configuration?
awesome thanks!
Kevin Groen thank you
Great video Dean. I have a technical question about my personal stereo install and it's to much to try and ask in the comments but would it be possible to call your shop? Keep up the great videos.
Yes you can just ask for me.
If you connect the back up camera and the radio to the constant 12 v won't they be on all the time
Cool I want to do this but have a question what if I have a headunit, backup camera and also want to add a relay for my capasitor, 2amps and a fan. Can I use 2 relays to do the same thing you did but all together in one harness.
I'm stuck on this too kinda lol
pls help us how any amps of relay i will use , i am using 1.5 horse power
Correct me if I’m wrong but can you also install a relay at rear of car? By connecting constant directly to battery (insinuating ones in rear) and wiring remote and ground accordingly?
No unless you added a little fuse to it and a switch otherwise whatever you want to power will never shut off
That last red wire where do i wire it to the camera signal wire to reversed wire from head uint?
Can I run 2 amps a stinger car and a back up can off one relay?
Again, another great video!! Hot many devices can I connect with just one relay?
It depends on current draw. Most relays will hand up to a 30 amp draw. So for example if you have 4 amps, a power antenna, and 4 fans 1 relay will do the job.
great, thanks again for the helpful information.
@@FiveStarCarStereoIncI am running two amps and I am going to run LEDs and a fan. can I hook #87 to distribution block for power instead of radio harness and do I need fuses if so what size and where
Hi, I know that you guys are really knowledgeable. I’m looking to pick
up a 4200 NEX but I want to have the backup camera always be able to be
on as well as switch to it when the car is in reverse. How does the
radio need to be wired? Do you still have to wire the 4200 NEX to the
brake lights to get this working? Seems when I was reading online you
can connect the camera reverse wire to the 4200 NEX and it has software
to be able to let you still view the camera any time you need to without
being in reverse. Is this true?
Yes you will still need to connect to the reverse wire.There is a setting in the you can turn on to view the camera all the time. Check out this video
ua-cam.com/video/TDOXNEh1eH4/v-deo.html
Thanks alot. This is why I really like your channel. Fast responses. Wish you were in NJ. Do you know of any Good shops in Northern NJ ?
+ninjamaster2009 yes try Enfig (201-490-5015) ask for Christian, tell him Arty at AAMP sent you.
Thanks you guys answered my question in another video. Thanks again.
I have a Kenwood double din radio. The aux AV input is not working for what I want. I am trying to screen mirror my phone, but it is not working. Used a CA-C3AV adapter and nothing but blurry image. Tried another and same thing. Wondering if I could wire up a relay system of some sort to use the camera button as a double function, screen mirror when not in reverse, but backup cam when put into reverse. Please help...and thank you for the vid on the F-150 with Pac Pro4 video. Made my life a lot easier when I installed my Kenwood. Got out of doing car audio almost 13yrs ago. Did it for 10yrs myself at different places.
Basically looking at putting a y connector on the camera input, using bluetooth audio for sound and cam button for video, and still being able to retain the backup camera when put into reverse.
Sorry for the multiple replies, looking to split the RCA to the tip and outside ring on a relay, that will somehow trigger once in reverse to turn on camera (possibly on another relay), but screen mirror my phone when I hit the cam button on the Kenwood using bluetooth for sound when camera is not put in reverse.
Thanks! It's the gauge of the wire #18?
+Lucy Gonzalez yes it is
Would you have to add a relay even if the back up camera “hot” was spliced in with the “hot” reverse light wire? Thanks!
Did you get an answer?
Because I have the same question.
No you don't need a relay
hello i want to power my camera and headrest whay methond would i use also what relay p/n would you get. is the stereo amp wire the one being used
Good video but u got to step it up to 5 amps in the back front and back up cameras and side mirror cameras fans 13inch kenwood deck ok ok it's a 10 inch kenwood but I keep it clean lol head rest and visors monitors now what
Ok so what if I got three amps back up camera two head rest monitor?
Is there a way to do this with a bus bar?
Which relay kit is this? Where do we buy?
Can I daisy chain my amplifier’s remote wires and just have a single remote wire to the relay? Instead of having two remote wires like you have in the video? Or is that going to cause a problem?
I’ve done both before I was just nervous seemed bad so I fused remote wire after daisy chain amp to amp
If you were to hook up a relay for your amps can you 1) get the power and ground from a distribution block running just the remote off the deck and 2) can you run your backup camera power and ground off same distribution block?
Yes that would work fine. We used to put the relays back at the amp all the time. It is easer to service if the relay goes bad.
Thank you
Now quick question, I already use a 40 amp relay, which powers my 2 amps, aswc steering wheel control, and the antenna wire.. Can I add my camera power wire to relay instead of tapping into red wire on pioneer 5100??
+Jason Myjak yes. you are nowhere near the limits of the relay. Unless you are powering it with a low current power source.
Five Star Car Stereo Thanks appreciate it!!
Nice video but which one of the examples do I use i want too install 3 amps and 1 epicenter thank you.
You definitely don't need a relay on the remote wires, just daisy chain the same remote wire to your 3 amps and epicenter, whatever that is
With 3 amps and a epicenter I would use a relay sorry😢
Do you need to fuse the relay? Just wondering.. let's say I got an AudioControl Epicenter, Gm9500 and Gm 8500.. running full active
Steven Chua depending on where you get your power source, it would not hurt to fuse it.
Five Star Car Stereo lets say I got it from the radio's remote wire.. fuse it at .5amp? Thanks Sir!
Steven Chua the remote wire out of the radio will not need a fuse. You would want to put the fuse on the feed wire for the relay( the yellow in the video). Keep in mind if you are using the wires behind the radio they are fuse by the cars fuse box.
3:15 It may be splitting hairs, but it's an increase in CURRENT not voltage you're after. You said it twice, but I know you know better. :-) Good video!
@firebirdude2 is NOT splitting hairs. Amps and Volts are two DIFFERENT things, but related to each other through a simple 3rd grade equation.
The most basic fundamental equation of electricity
v = ir
Volts = Current (amps) x Resistance (ohms Ω)
I am always flummoxed by the complete and utter ignorance of people that know nothing about the nature of the devices and contraptions that surround them in their daily life, for instance most people can't explain the difference between AC 120 volts from a transformer feeding a light switch in their home and a 1.5 DC volt AAA battery.
If you were to use a hose and a water pump the analogy to v = ir is:
Pressure = Flow times the Restriction
Up the pressure (volts), you get more amps. But in a car the volts stays at 13.6 (while the battery is charging) so the only way to change the amps is to reduce the resistance. The output voltage of the accessory wire does not change.
Resistance is given off as heat at the rate of the square of current i^2r. Heat degrades or melts insulation that causes short circuits. Fuses and circuit breakers protect against short circuits.
Wire has resistance. A larger wire diameter wire is required, like a hose, to reduce its resistance.
The smaller and longer the wire is, the more voltage drop occurs -- a thin wire has lower voltage on the load side than on the supply side. The more current the load pulls, the greater the voltage drop. If a backup camera only requires milliamps to operate, a relay probably isn't required.
The significance of a relay is a tiny amount of current (milliAmps) in two small control signal wires to pins 85 & 86 turns off and on a much larger current through larger wires at pins between 30 & 87 or 30 & 87a in a Bosch-type Single Pole Double Throw (SPDT) Form-C configuration. This relay configuration occurs in many, many locations; for the ignition system, engine control module (ECM), powertrain control module (PCM), starter motor, fuel pump, fuel injector system, head lights, horn, brake & parking lights, windshield wiper motor, power door locks solenoids and power seats/sunroofs/power window motors both use dual (2) relays to reverse direction by switching polarity, heated seats, alarm, defrost/heat fan motor, radiator fan motor, A/C clutch, radio and antenna motor, subwoofer amplifier, trunk lid opener, fuel door, cigarette lighter/power port, rear window defrost, windshield washer pump, trailer brake, trailer lights, trailer battery charge, accessory delay, airbag, Anti-Lock Brake System (ABS) Pump, reverse backup light beeper, air suspension pump, fog lights/LED auxiliaries.
@@JulesBartoware you a truck driver by any chance ?
I'm trying to hook up a backup camera on a BMW 08 e90, I have the relay hooked up, main power coming from the battery.. Problem is it works fine while the motor is off still but, when the motor is on the backup camera works for 6 seconds and then the screen goes black and the relay starts buzzing
+shane pavlovsky that is odd, how is the relay wired?
what if I have wireless transmitters for my backup camera on my vw passat where would I add the relay?
goingafteru2 in the back at the tail light, you would have to run a power wire.
How do you know how much amps can be drawn from the yellow?
The wire’s output rating
Yeah, where do I put the relay? I have no room behind my radio for the relay and I also have a window antenna that's only accessible from behind the radio..
Will this help with engine noise from 12v acc?
I would verify you have good grounds, and run a good ground from your alternator chassis to your battery.
I use to wireing the back up camera red to red on tail light and back to gound then yellow to yellow run yellow end to head unit and then conect tailight reverse to head unit reverse the video on screen
Okay, so I have a garmin backup camera that I am adding to the back of my vehicle. The vehicle cuts voltage when it senses something is attached to my reverse light power current, not allowing the backup camera to engage. How can I install a relay for this? Basically the wireless camera needs a 12v current to power up in order to immediately send input to my GPS screen.
Josh Feidt what type of car is it
Five Star Car Stereo It is a 2010 Volvo S80
nice video should i use a diode?
Not really necessary.
+Five Star Car Stereo Thank you great videos
I can hear the relay flickering on my tweets. Is there a reason for that?
Correct me if I'm wrong but isn't pin 30 the main 12v source so that was pin 87 gets power when the relay is active and pin 87a get power when the relay is not activated?
What do you connect the relay to.
+al mil for output power we use the yellow 12 volt
What would be the problem if i ran both the radio and the backup cam on the same acc+.
There would be no problem. The relay would only be needed in cars with a low Acc power output our if you were doing multiple devices on the Acc.( example overhead, power ports, 2 cameras)
Thanks
@@FiveStarCarStereoInc can that 12v acc turn on 4 amplifiers? or does it need a relay?
in my other car i had the 4 amps on the remote wire without a relay, had that for about 4 years with no problems
What’s the 87a used for ,??
Voltage reverts back to it when the relay is not energized
What if the radios these days come with no remote wire?
Hi. Are 30 and 87 swapable?
Yes
Í use a 3Sixty.3 DSP, and 8 out of 10 it kicks everything in, as it uses its remote turn on. I think the HU has one also(2 amps), but if I do the ignition turn on quick, the car and the HU turn on, but the rest, the amps don't kick in. Even the DSP remote bass control lights are not on. DSP I think fails to boot properly.
Would this help that situation?
It sounds like a power problem so yes
great to know... will watch again to do this install.
can any relay be used to create the remote turn on?
He's not "creating" a remote turn-on. He's increasing the current capacity of the remote turn-on that comes from the head unit. The second part was the same situation, but with an ignition wire. Also, this is a SPDT 12V relay. There are many designs. Many will work, but many are overkill. In fact, a SPST relay would have worked for this case.
thanks for the correction
Boyd Reid is the first relay application for 2 amps??
It can be used to turn on many many amplifiers. A standard Bosch SPDT automotive relay is good for 30+Amps of current. An audio amplifier takes anywhere from 3-40mA of current to power up. In other words, you could turn on nearly 100 amplifiers with that one relay.
how do you know how many amps a wire has?
If you're asking about the remote turn-on wire, you can try looking in the head unit owner's manual. If you're asking about a wire in the vehicle, it's more difficult. You MIGHT be able to find that info from an online resource like AllData or Directechs, but they generally don't list that unless it's something out of the ordinary. You can track down which fuse it's connected to in order to get a rough idea. Also, the wire gauge itself would be a clue. A skinny 20awg wire isn't going to carry the amperage that a 12awg on would, for example.
firebirdude2 so if for example i have a 15 amp remote wire i can run 3 5 amp items or how do i divide the amps properly for like a power stripe and bridg e them the 1st one will have more power or will it divide by the pool of the load ?
that looks like a Simmons relay for motor controls.
3.6L Dodge Avenger relays for cool little helper
wait what? I get a Free relay?
I was only just saying it looks like a relay for a motor control for an assembly line. I'm sure that manufactures use relay designs for different purposes.
I meant no offense.
3.6L Dodge Avenger non taken, I went and looked at the relays you were referring to. They look like big versions for of the ones we use. Very cool. Last year I had to replace a AC on one side DC on the other for my Air conditioner, I never knew they made such a thing.
Five Star Car Stereo
relays comes in all sorts of shapes and sized.
Short video tutorial from a car audio master installer but the content is everything you need for bypassing e brake for head unit and your remote turn on for amps and a backup camera install thanks sir dean and i cant believe there are dumb as%%^&£€ who gave thumbs down to this tutorial
Where do I get these wires and relay?
Amazon look up SPDT or single pole double throw relay
You're still using ONE 12v power line from .. wherever.
Dont you want a 'bigger' power line to power accessories? Or, is this ONLY for turning on amps, not 'powering' them.?
Mannn 12vol suspose to be on 30
what does a relay do
speaker zedan it allows you to take a low amperage circuit and turn on a switch to a higher amperage circuit. So for example if you had a 1 amp output circuit and you needed a 10 amp circuit, you would add a relay. This is the most common use for it in car audio.
+speaker zedan
Go to *www.bcae.com* (Basic Car Audio Electronics).
See Topic #36 on Relays located in the menu on the right-hand side of the page.
There are Diagrams & Photos to illustrate Relays & How they Work on the web page.
@@bbfoto7248 the corrected web link is www.bcae1.com
www.bcae1.com/relays.htm
Yet another video perfectly explaining the function of a relay...but failing to explain how a 2-4 gauge amp wire connects to a tiny relay! ...I'm going to see how the starter relay works on my truck..because that is also a 2-4 gauge wire.
That runs from the battery dude you gotta be joking
This video could have been a couple diagrams, thats all.
+Five Star Car Audio
IMPORTANT! Dean, you left out an important detail !!!:
You need to put a "QUENCHING DIODE" or Suppression Diode in Parallel with the relay coil (Between Contacts #85 & #86) to suppress any Back EMF (which can be up to 200 volts!) from damaging the attached components!
See Topic #36 on Relays and then scroll down the page at *www.bcae.com*
There are Diagrams & Photos to illustrate this on the web page, but Here is what it says...
*** Quenching Diodes:
Anytime that a relay coil is driven by a circuit that is not specifically designed to drive a relay, you should use a quenching/suppression diode connected in parallel with the relay coil. The diagram below will show the connection of the diode. Initially, you may think the diode serves no purpose because the voltage applied to the relay cannot pass through the diode. This is true when the relay is energized. The diode comes into play When the Power s
Source is Removed from the Relay Coil.
When power is applied to the relay coil, a magnetic field is created and energy is stored in the coil. When power is removed, the magnetic field collapses causing a reverse voltage to be generated (it's called inductive kickback or back EMF). The back EMF can easily reach 200 volts. The diode will absorb the reverse voltage spike. This voltage, if not absorbed by the diode, will cause premature failure of switch contacts and may cause the failure of power switching transistors. You can use virtually any type of rectifier or switching diode, i.e. 1N4001, 1N4002, 1N400x... or Radio Shack part No. 276-1101, 276-1102, 276-1103, 276-1104.***
Hey when u tap on ur link it takes u to alcohol bartending lol what gives
@@MILO20121 www.bcae1.com/relays.htm
Are you two gay? I get the impression you and the Mexican are lovers.
That's not even funny bruh. Not even in a UA-cam troll type of way.