How To Wire Electric Fuel Pump Relay / Bypass / Rewire / Hardwire Upgrade
Вставка
- Опубліковано 14 жов 2020
- In this video, I show how a fuel pump relay works and how to bypass yours. I also show how to rewire your fuel pump for an upgraded fuel system or race car. Aftermarket 5 pin bosch style fuel pump relays can easily be wired into any car and made to work with nearly any electric fuel pump scenario you can come up with. This info could apply to any Bosch 044 style pump, AEM external pumps, or even a Walbro 255 fuel pump.
Pin 30 - Incoming 12v to relay from battery
Pin 87 - Outgoing from relay to electric fuel pump power.
Pin 85 - Ground
Pin 86 - Trigger wire to turn on the fuel pump relay. Can be connected to a toggle switch, the ignition switch, or connected to the factory fuel pump relay wiring.
🔗 5 Pack of Relays: amzn.to/2FDvkne
🔗 10 Pack of Fuse Holders amzn.to/3k4vRgK
🔗 272 piece fuse variety pack amzn.to/3k48cNt
*As an Amazon associate I earn from qualifying purchases.
🔔 Subscribe to This UA-cam Channel: www.rattymusclecar.com/Subscribe
🔔 Follow me on Instagram: @Ratty_Muscle_Car www.rattymusclecar.com/Instagram
🔔 Join me on Facebook: www.rattymusclecar.com/Facebook
Tags:
#RattyMuscleCar
#Automotivewiring
#WiringRescue
#FuelPumpRelay
Please Note: This video description contains affiliate links, which means that if you click on one of the product links above, I will receive a small commission. This helps support this channel and allows me to continue to make videos like this. Thank you kindly for your support! - Авто та транспорт
![How To Test and Diagnose Relays and Wiring [4 & 5 Pin]](http://i.ytimg.com/vi/S-DwV0HLsE4/mqdefault.jpg)
![How To Test and Diagnose Relays and Wiring [4 & 5 Pin]](/img/tr.png)
Thank You for Watching the fuel pump relay wiring video!
Subscribe To This UA-cam Channel: ua-cam.com/users/4g63mightymax
See My Wiring Playlist: ua-cam.com/play/PLsF7T1tRFy2hmiiUUfMZNyV-BUA_yrPIh.html
Hi i want to asking something its possible the electric fuel pump with RPM tachometer connected
For what year vw vehicle is this video?
Thank you
very good video. very interesting and informative
Do you have a multipump tutorial of this? Can the relays be linked in parallel using 87a to one toggle switch for example having a surge tank with 4 fuel pumps and 4 5 pin relays? Then keeping the factory in tank pump connected to the factory wiring?
Why does everyone else seem to take three times as long to describe half as much detail with a quarter of the clarity? Nice one... 👍
Thank you!! I’m glad it was able to help you out!
@@WiringRescue I just watched 5 videos trying to find this one...they should delete theirs. Thank you!
Facts wish this vid was out when I ran one
Visuals
I agree.
Thanks for making it so easy, I've put off installing an elec fuel pump for so long, now I can attack it with confidence.
That’s fantastic! I’m glad the video gave you what you needed!
Videos like this make me love wiring and electrical. When I don't know, I absolutely hate it that you so much,. great video!
Funny how it’s easier to understand when placed out on a grid/chart compared to laying under a car trying to trace it ........ nice job
Thanks George! I did one similar a few months ago and people really liked it. So I bought a few more relays, switches and fuses so that I can do some more automotive wiring how-to’s! :) Thanks for watching!
There are very few creators on YT that know what they are talking about and, secondly, can communicate their knowledge to others. You are one of only a tiny handful that gets my unqualified approval. Thanks!
That’s extremely kind! Thank you so much for watching the wiring videos! I really appreciate it!
This was clear, not ‘wordy’, concise, and to the point…..unlike most others. Thx 👍
Watched so many videos and was still left scratching my head on what to do, until I watched yours so easy to follow and straight to the point 👌👍
That’s awesome! Thank you for watching my video!
What happens if I bypass fuel pump relay 85 - 86 on GM truck thanks buddy i so much worry do I made mistake on ECM to burn?
These videos are great. I found your channel at the perfect time. I’ve been rewiring a motorcycle harness and feel very overwhelmed, this honestly helped as this is on my list to do. Definitely glad to have came across this and now subscribed! Thank you
This is the best video on this subject. Simple, accurate, thorough and complete. The wire for the trigger showed where my problem was. Thank you !
That’s awesome! Thanks for watching, I’m glad that you found the video helpful!
Definitely the best explanation I've seen so far. Fuel pump relay went bad in my 04 Expedition and this is exactly what I needed.
Thank you! I'm glad it was able to help you out!
I'm here for the same reason on my 03 expedition. Lol what size fuse would be best for trigger and power? Same as factory fuse or something higher?
Thank you so much! I am having trouble to get 12 volts to the live wire. I will try your schematic to see if it works.
Great video and well explained. God bless you Mr.
Glad you liked the video! Thanks for watching!
I love this, straight to the point, very easily explained. So simple you need somebody to help you misunderstand it!😳
Thank you! If you like this one, you’ll probably like a few other more elaborate wiring videos I have! Sort my videos by views and check out the top ones if your bored :)
You helped me finish my project with this. This channel is a big help.
That’s fantastic! I’m thrilled to hear that my videos are helpful to people! Thanks for watching the video!
Nicely done with the parts mounted on the board for a good visual learning experience.
I've used this 3 times now, thank you! Obd0 to obd1 honda conversion always messes with the fuel pump where it won't trigger it at all. This is a better fix than repinning the jumper harness
Heck yes! That’s awesome! I’m glad you are finding it useful! Thanks so much for watching!
I'm not a mechanic I'm not a electrician but this video helped fix my problem on the signal wire. The electrician told me the pump is gone an I have a racing pump saved alot off money
THANK You VERY MUCH,🙏
That is the best possible comment I could hope for on one of my videos! Thank you so much for sharing it with me. I really am happy that the video gave you what you needed and saved you some cash !
U should see my face when the car started 😎 thanks again I appreciate your video,🙏🇿🇦
Thanks so much this helped me a lot. Been chasing wiring,fuses,relays, etc and still
Didn’t have power to pump then decided try to re run it all
Myself and found this video, thanks man
Very nice video that was fun to watch without getting confused or lost.
Awesome! I’m glad it was helpful to you! Thank you for watching!
Dude the best video
I'm a carpenter not an electrician and I've been looking for a week for a video that would simplify these things
This video is straight into the point
thank you 👍👍👍
Ps
I will be sure to like and share and anything else to promote that I can
You are my mentor and you don’t even know it I will figure out a way to send you pics of my setup with everything I’ve learned from your channel when it’s done
😂awesome! Post it on instagram and tag me in it @ratty_muscle_car
This is what I needed! Thank you well put
I’m very happy that it helped you out! Thanks for watching!
I was 25 hours from home and this setup got me home. Moab to Detroit. Used a light bar wiring kit from Walmart. It had every component you listed. Can’t thank you enough.
That’s absolutely badass! I’m so incredibly thankful and excited you wrote this. It’s really motivating to know that my videos are actually helping out people! Thanks for watching!
@@WiringRescue I was stranded in a parking lot. it took me half a day to diagnose the short somewhere in my pump relay circuit. Crank no start. No voltage at the pump. Couldn’t find the short so I bypassed everything and used a rocker switch. You literally saved me thousands of dollars. The world is a better place with awesome people like you. Thanks again
OMG! This is 110% perfect! Thank you so much for the short and simple explanation! Great video!
You’re very welcome! I’m glad it helped you out!
Hey just watched your video here. Really good stuff. I love how you've laid it out on this piece of cardboard and just made it really simple and straightforward. I love that. I feel like if you can lay stuff out in front of you and trace it out. It's just so much easier to visualize it and think about it in your head
Glad I found this. I am already a subscriber. I wired a relay off my ignition wire to aft as a “jumper” to keep my ign switch from overloading. But I think it’s causing issues. The pump does not come on now. Also my grounds should go to each other and on pin 85. Will try this. Pump worked before but I had aftermarket efi. Now I switched back to carb and the fuel pump does not work. Will rewire and retry! Before the ecm would “ground” the pump and switch it on.
literally the best video i've seen on this. thank you
Just what i was looking for. I'm building an engine test stand, this will be perfect. Thanks so much.!!
Happy to help! I’ll likely be needing your channel’s advice as I do more work to my 71 Mercedes! ua-cam.com/video/yvjzerUFvyI/v-deo.html
@@WiringRescue Absolutely. I also run a Facebook group " Mercedes Maintenance" join us. Loads of expert and helpful people there. Cheers John 🍻
Yeah I used these 5 pin relays to add factory power windows to my vehicle. Bought a FSM wiring book then created my own wiring loom. Used heavier grade wires and they work faster than if factory installed.
Yes! These things are so cheap and universal, which is awesome. On a car, they have an infinite amount of uses. Thanks for watching the video!
Thank you for making this explanation so simple
Happy to help! Thank you for watching the video!
Best video I’ve seen on the subject. You’re the man!
B E A utiful ! I love this presentation!
Thanks! I’m glad you liked it! Subscribe and I’ll make more!
Great vid I was about to install a switch for my hi pressure fuel pump but using a relay makes much more sence for my 500hp 65 GTO😛
love the vids man. i definitely look forward to your videos... and not just cause im also ls swapping my 72 lemans as well!
Thank you Mike! I'll keep making them if you keep watching!
Great work on this video
You may add, that a relay needs to be diode protected in order for the circuit to be computer controlled. So that when the relay coil is turned off it does not back feed voltage into computer.
exactly the video I was looking for thanks🍻
Awesome! I’m glad that it helped you out!
Thanks a lot for these videos... it's simple and well explained ...big thumbs up
Thanks for watching! I’m glad that you liked it!
Like how you explain everything, I'm your new subscriber now 👍
Thank you! I appreciate every subscriber I earn!
Subscribed. That was what I needed thank you. I have a 2007 Acura TL. No power to the fuel pump. Fuse is good. Relay is good. Wiring is correct. I’m not sure what wrong with it. Maybe fuse box? I’ve run out of time and money so this may just have to do the trick.
Im not great with stuff like this - That being said probably the best explanation out there
Thanks for watching! I have tons more wiring videos, if you find yourself bored this weekend. Good luck with your project!
@@WiringRescue I'll be undertaking this soon as I have no power on my fuel pump .. relay ok fuel pump ok ground ok but no power .
The next step just hardwiring it and be done with it lol
Watch all already. Wish you had more. All great.
I’ll keep making them if you keep watching them!
Awesome video man made it super easy
Thank you! I'm glad you enjoyed the video!
Terrific explanation and diagram. I'm trying to drain the fuel tank on my 204 Buck Ranier, and have tried using a jumper, but I can't keep the pump running. I will have to study your setup and try again. Thank you.
Perfect explanation!
Thank you! I appreciate the kind words.
Good video a lot info best video for fuel pump relays on UA-cam
Thank you! I really appreciate that!
The best video on UA-cam thank you
That’s a serious statement! Thank you so much! I appreciate it!
I did this exact thing today but with auxiliary fans 👌
Ha! That’s funny! I find myself doing this style circuit constantly when working on my old cars. As always, thanks for watching!
Best explanation to date, great content
Glad it was helpful! Thanks for watching!
Good job. The least confusing version I've seen
Thank you! I’m thrilled to hear you found it helpful! :)
Great video. I follow for your work.👍🏻
Thank you! I appreciate you watching!
Nice wiring video
Great job 👍🏻
Thank you! I really appreciate it!
Wiring videos are all outstanding.
Thank you! I have a bunch if you're bored! Check out this playlist ua-cam.com/video/c8JDQrUquw8/v-deo.html
@Roger Labbee Thank you! I really really appreciate that!
Shared on social medias bro good work
Great advice
Thanks! I’m glad you like the video!
Thank you for your help!
Well explained thank you
Thank for watching! I appreciate it!
Thanks for the info!
You are very welcome!
Thanks a lot!
Thank you for watching!
Great video! Thanks!
Thanks! Your channel name is excellent! (I
@@WiringRescue Thank you sir!
You sir are excellent keep it up
Thank you. You are pretty excellent as well. Thanks for watching!
Most ECUs control the pump (in fact all actuators and other stuff) with switched negative. Positive is always present at the pump, as switched positive can backfeed the ECU.
I was just watching a bunch of switching trough relay videos and none of them switched nor the relay or applications trough zero. What a shame.
Ummm.......nope. You will NEVER see always positive at a pump. If you do, you f'd up. You do, however, find constant positive at the relay
Thanks dear sir, thankful video 😊
Great job 👏🏾 thx
Excellent 👍
Thank you! I appreciate it!
Very helpful video
Thank you ! I’m glad you found it helpful!
Thank You ! !
I’m glad the video helped you out! Thanks for watching!
Great video, do you have a video that explains how to wire dual relays to a selector valve for running dual fuel tanks?
THANK YOU THANK YOU THANK YOU!
You’re very welcome! Glad you found the video useful! I’ve got LOTS more too if you find yourself bored this weekend! Haha!
Thanks!
You rock! I truly appreciate this!
Thank you !!
You’re very welcome! Glad it helped you out!
nice video put me on on put a second pump on my charger thanks 👍
Awesome! Thanks for watching the video!
Ur brilliant
And you are a champion! Thanks for watching!
You are amazing
Thank you so much for posting this video! Any recommendations how to use trigger wire based on boost level or only turn it on when car is above certain rpm range ?
When it comes to upgrading fuel systems in turbochargerd cars, people usually upgrade the fuel pressure regulator to one that is a 1:1 rising rate. That way you can run a high volume fuel pump all the time and it runs like stock. However, when the turbo spools and starts making boost,the fuel pressure increases 1psi for every 1psi of boost.
For higher horsepower applications (maybe 600hp+), you’ll get into larger fuel line, multiple pumps and surge tanks/swirl pots. Below that, 1 good high volume pump should do the job just fine.
New subscriber 🔥🔥🔥
Thank you!
Thanks.
Your welcome! Thank YOU for watching!
Thank you
Your welcome! Thanks for watching!
Great video, one question though. Is it best to keep the relay close to the battery up front or closer to the fuel pump in the rear or does it matter?
Quick question, I'm trying to add a kill switch to my truck for the fuel pump... When I cut the positive wire to it from the fuse box do I run 2 wires from pin 87 to connect to each wire... Also since it's going to be on a rocker switch can I just add a jumper wire from pin 30 to 86 and it still work, or do I have to run pin 86 back to the battery...
U are totally outstanding man, thanks alot
I’m glad you liked it! You’re outstanding as well!
Thanks to you i am bypassing my oem relay on my 3rd gen camaro man so thanks 🤘🏽 you explained it so simple that even a moron like myself that can work on anything mechanical on his car but absolutely stupid when it comes to anything electrical was able bypass the car by myself. I just went ahead and made it a kill switch, instead of a toggle switch i decided to buy a GM floor dimmer switch and turn it into a on/off switch so now ill simply have to hop in my camaro and step on the floor switch (bought a small foot pad for it) and my fuel pump is ready to go haha bitchin right?!?
That’s absolutely awesome! I’m glad the videos helped you out and that is an awesome idea! I may do that to my car! Lol
I give this video a 10/10.
😂 Thank you! This was one of my earliest wiring videos and it seems to be a hit. However, this one is my personal favorite ua-cam.com/video/Yz9kqxWkoHI/v-deo.html
@WiringRescue question: could I use any 4 pin fuel pump relay from any car to create this setup. Plus does the relay need a earth wire for the relay to work. I just put an AEM 340LPH in a mitsubishi GTO in uk.
@@beastman.330- Mitsubishi GTO’s are awesome, and I happen to be a big Mitsu enthusiast actually .
So - your 4 pin relay just needs to be rated for the amperage that your fuel pump draws. Most aftermarket relays are rated 25 or 30 amps, and I think a 340 will draw less than 20 if I recall correctly.
You DO need to ground pin 85 on your relay to a good ground/earth. Then the pump will need a ground/earth wire as well.
Your factory fuel pump wire will go to pin 86 and it will turn your relay on.
Pin 87 will go to your pump.
Pin 30 will be a fused power source from your battery. Again, this fuse should be rated just higher than your fuel pump amperage draw. And this wire needs to also be rated for a higher amperage than your fuel pump draws. I usually use 8 gauge wire when I rewire fuel pumps.
@WiringRescue Thank you very much, my friend.
@@beastman.330 - happy to help! Good luck with the Mitsu GTO!
Great video. I’m assuming I can use the same gauge wire if I’m switching over from a mechanical pump, amperage fuse according to manufacturer or is there a standard, thanks
If you don't have a factory computer trigger wire make sure you run the trigger wire through an oil pressure switch, the last thing you want in an accident is the fuel pump running feeding a possible fire.
Agreed! Another option would be an inertia switch like I showed in this video. ua-cam.com/video/MHgMHE6TUG8/v-deo.html. Thanks for watching and sharing a good tip!
This video was super clear! So much easier to understand than anybody else’s video. Just one question regarding the trigger wire, I’m going to run a switch, would you advise running a in-line fuse on the trigger wire like you have on your diagram or would it be fine with out? Thank you
I would always recommend having a fuse on every circuit. Without it, the trigger wire could rub on something and light the car on fire. :) you could tap into another circuit though that already has a fuse in it, like the radio for example. The switch won’t pull much extra power, so adding it to an existing circuit would be okay.
@@WiringRescue I understand, thank you for that! I’ll see which wire I could tap into, if not I’ll just order another in-line fuse, they’re only cheap and I’ll just run it to the battery along with number 30👍
@@Inject- That sounds perfect. I think I put a link in the description of this video to the fuse holders that I used, but there are a million different varieties out there. You can buy them for a couple bucks at any local auto part store too. Fuses are money well spent ! Thanks for watching the video!
@@WiringRescue no problem! Thank you for your replies, very helpful. Earned a sub and a like👍
@@WiringRescue Your Great My main Man bro if the creator responds you be the first lol ! i tryed to void and use a curved paper clip sticking in to the 2 holes and it started? but thats crazy and dangerous to have plus taking it out will stop the pump. kind of thought about your way but couldn't wouldn't gather up enough brain cells to figure it out🤔🧠😜. all other explaining videos take me on a ride doing a entire build of the car starting with how the pump works and by the time we get to the fix i for get and change the channels . may be is to make the video longer with more possible ADDS of course if they are RPP members. Your wise and can make the Videos as well really helping the people as well . THANKS 👍👍👍👍👍
Awesome diagram for us visual/practical learners, thanks. What is the purpose of 87A? Is it for an alternate circuit sharing the ground (85) with 87? Does it trigger synchronously with 87 from 86 (on trigger, 87 and 87A both become high), or does it alternate state with 87 (ie, 87 high, 87A low, then 87 low, 87A high)?
Thank you! I actually made a video that answers exactly this question! Take a peek when you have a chance! ua-cam.com/video/W2Mr2Zgv1Ck/v-deo.html
Great video and easy to follow. I have my LS3 all hooked up accordingly, the pump comes on key ignition, and it starts up. however when I run the car down the road easily and then jump on it, the fuel pump shorts out, but not the fuse and stops the car. I would take a live 12V battery spare wire and hook it to the fuel pump wire and start the car and it starts so I could get back home, then I have to disconnect the "hot" wire off the fuel pump wire otherwise the engine would stay on after removing the key. What connection do I have wrong that would make the fuel pump cut out just by quickly jumping or accelerating the engine?
You running dual tanks? I’m doing my first LS swap in a 77 C10 and could use some help where possible.
Heavier gauge wire, fuse, relay and good grounds. It seems like the pump is demanding more than it can get.
Could you please do a turn single (pair L & R ) With a hazard switch all in one model . Please and thank you. ......keep up the good job .
I've gotten a few requests for this, so I'll add it to my video to-do list!
@@WiringRescue thank you very much 😅 sorry to bother you
Good video, if I want run two pumps can I use 87a,or 87 split In two cables?
Great stuff can you advise what gauge wire you mean when you say heavy gauge and what size fuses would you use for this.
I actually made a video to answer that exact question. Check this out: ua-cam.com/video/EhzN6UdnmPA/v-deo.html
This has to be the best video I have ever seen. Nice work!
Wow! Thank you!!!
If I’m running a HP fuel pump AND a LP lift pump. Do I just have th few same wiring? Just twice running along side?
Good Day mate, thanks for time on great video 👍😊 mate can I use it for on Diesel engine ? Cheers
Hello! The electricity works the same way on a diesel, so the relay circuitry should be the same! Good luck on your project and thanks for watching the video!
Complimenti, ottimo video, secondo te è possibile aggiornare questo cablaggio con un potenziometro di flusso per la pompa?
I Love the physical schematic and great explanation. I do have a question: on another video I saw that the presenter mentioned about wire “87A” as your direct hot wire to the fuel pump in case of emergency, is this true? . Now, my pump will run but it will not prime when I turn the key on, the vehicle requires, at least, two good long cranks to then start. After that, I can hear my fuel pump humming normally. I also replaced the relay only to observe the same behavior. Is this a sign my pump,is going bad? All of this happened after my mechanic replaced the electronic spark control among other things. Please shed some light? Thanks again!
Thanks for watching! I haven't seen that other video, so I can't be exactly sure how their circuit worked. There are many ways to wire a fuel pump though, so anything is possible. If the fuel pump isn't priming when you are trying to start it, I would expect it to be very difficult to start. If I were you, I would connect a fuel pressure gauge to the fuel system and see if it is getting fuel pressure when cranking the engine. If not, hunt down the reason why. It sounds like you may already know this reason. My guess is that your fuel pump is getting fed power in the "Run" position, but not the "Start" position.
Good luck!
This is my next step after getting the break lights working
Excellent! I’m glad you find the videos helpful!
If you wanted to have a hobb switch activate the secondary pump would you just run the trigger wire (86) to the NC on the Hobb Switch then once the pressure is reached it will close the circuit?
Any tips? My ECU have strategies like low voltage at idle and 12v for the original fuel pump. Thanks.
Super helpful video! Maybe an ignorant question, but how do I determine the value of the fuses between the battery and pin 30 and between the trigger wire and pin 86?
Great question! It depends on the components that you are using. I made a whole video about this actually! :) ua-cam.com/video/EhzN6UdnmPA/v-deo.html