How to Hardwire Your Fuel Pump With A Relay 

Nice work, John. Easy to follow and a necessary mod for any big power car. I have few suggestions or things you didn't mention. First, you should use a bulkhead fitting to go through the top hat. It will have rubber insulation inside to eliminate the chance of the wire ever chaffing and shorting on the fuel pump assembly, plus it creates a vapor seal. You can get them for around $10 if you search fuel cell electrical bulkhead. Your install should be fine, but this is more a tip for anyone reading. Second, make sure wherever you ground the relay that it is touching bare metal. I didn't see if you sanded off the paint where you bolted the connection, but you should ideally have bare metal under the connector itself and on the other side where the nut or washer touches down. If not, it may work at first, but you'll end up with intermittent issue later. Third, this is just a suggestion to increase wiring reliability, especially in the engine bay. Get a set of ratcheting crimpers specifically designed for heat shrink connectors and a box of various connectors. The crimpers work so much better than standard and make reliable connections. The heat shrink insulation with glue adds strain relief and water proofing. Take this all as just adding on to your video of course, not criticism. I have been slowly acquiring lots of wiring tips and tools over time. Gotta spread the knowledge.

Dude well done! Extremely helpful!! I searched a few months ago for a video like this and nothing. And then you did it. Thanks again!!

Great that you made this video because there is not much to find about that topic. Good arguments in the reactions to protect the wires at the fuel pomp. So we can learn from each other. Keep up the good work and still make these kind of video's. Greetz from Belgium and a happy new year 😉

I would’ve ran an 8 gauge wire to auxiliary fuse block either in the bay or under the dash. Then send power to the pump from the aux block. This gives you the advantage of having a bunch of extra power sources instead of adding wires to the battery

I appreciate you, I’m literally about to start this same process and you posted this video right in time for me to prepare myself

Thanks for helping us learn lots of useful things by uploading videon of your build. It really helps. keep it going john fr😊❤

Very good video as always. Keep up the good work 👍

Casually finally understanding some electrical concepts 2am on a Friday…thanks John😎

Great tutorial, it really simplified the process! 👍

John, your right there are NO good or any videos covering THIS topic. You did an EXCELLENT job on video. Painless Wiring Company ALSO makes an EXCELLENT fuel pump relay kit. It's a great price and works just as good. I Used their brand on my 94 EG hatch for twin Bosch 044's. The DW kit you have John looks really quality as well.

Well explained. Its always better to have relays running high output components like fuel pumps / cooling fans and ofcourse the vtec solenoid

You should do these more! Cause I have an eg hatch as well so it helps out!

Best tutorial. 🤝🏽

Awesome video

Great content

Great video John! LY ❤️

Thanks John

Well played sir....well played

Hey how did you get the AN fittings on the fuel pump cover?. can you make a video on that I wanna do the same so I can run AN lines from the tank to the front and back. Thx

Thank you joung brother!

John, good thoughts here. On your next install can you please use rubber grommets when going thru metal to reduce chafing/shorts.

Thanks

Dont you need to also put a bigger wire to the ground side of pump? Love the video!

I did a k20)24 with a hell cat fuel pump I'm still on factory wiring and my k pro is throwing dtc P0005 I wonder if this kit would fix my issue?

Nice videos man. No one really have a easy install video for hondas. One question. For the ground coming from the fuel pump connector. Did you just attach it to the assembly that drops in the tank just like how it is stock?

i have an ep3 so i was wondering if instead of connecting the power wire directly to the pump on the inside of the tank, can i just splice it into the connector on the top of the fuel module? like cut the power in the harness and run it to the wire directly to the pump side of the harness

So if I wanted to use this setup on a toggle switch would I just wire the switch on the blue wire?

Check ECU n and look good not burnt or broken

If you don’t have a trigger signal in case in my case for my 66 VW bug , I can wire a positive lead to a switch to turn off and on power to mimic a trigger signal to the blue wire to activate that relay correct I think I just answered my own question I can. lol 🤔

You’ve been doing all this without this? Wow

You think this can help with my issue with my Honda because I change my fuel pump and main relay it didn’t want to turn on I also change my distributor also still doesn’t turn on it only cranks that’s all

Pls build video JOHN! ❤

You ran the larger gauge yellow wire all the way to the pump, then connected it to a smaller gauge factory wire anyway before it connects to the pump.

Let's goo

❤❤

I'm doing this to my toyota. My battery is now close to my fuel pump so my battery cable is much shorter.

Still no power to fuel pump git the pump out and tested it ran good

Hi John, I would remove the Amazon link that you provided for the fuel pump relay kit. I followed the link and purchased 2, one for myself and one as a Christmas gift for a friend. The image displayed is exactly what you used in your video, but what shows up in the mail is nothing like what you used in the video. It’s basically a pig tail and a universal pump sock. I went back to the listing after realizing there’s been a mistake and there’s multiple reviews about the false advertisement and not receiving what is pictured. Wish I’d have read it first but this is one time that I just really didn’t think I had to double check since I was following the link you gave us.

RUN A VOLTAGE METTER WHEN RUNNING CAR I CAN GUARANTEE THERE MORE VOLTAGE DROP NOW THEN YOUR STOCK WIRING SINCE YOU EXTENDED WIRES AND TWISTED WIRES TOGETHER THIS WILL LEAD TO VOLTAGE DROP IN HI RPMS

#BLOWNMOTORCLUB

Please please PLEASE disconnect that immediately John. The wire running through the fuel pump lid is going to chafe on that metal and short out. This is a HUGE fire hazard! You need to use a grommet or insulated stud for this

I ran a relay and my fuel pressure is 12 when starting the car

The correct way is NOT to drill a hole in the cover. The correct way is to remove where the white plug is and put a fitting that the wires go through it into the tank.

Bruh cmon why would you drill it when you already have the connectors there