Fuel pump wiring?

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Dec 4, 2012 | 11:39 AM

#16

brettcp

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Joined: Dec 2012

Posts: 10

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Thanks guys....I did check all the threads for wiring but not much around, greatly appreciate the time.....I hade to jump start my truck after standing for 3 weeks, I went to the shops and after that it wouldn’t start again, battery, fuses, relay, switch are ok....no pressure at the rail so I'm guessing the pump gave up or seized after the long no start......

Dec 4, 2012 | 12:21 PM

#17

subford

Fleet Owner

Joined: Aug 2005

Posts: 23,666

Likes: 301

From: Easton,Ks

Quote:

Originally Posted by brettcp

If you can not read the diagram I posed above just email me and I will email you one you can read.
My email address is at the bottom of this post.

Dec 4, 2012 | 12:33 PM

#18

brettcp

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Joined: Dec 2012

Posts: 10

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Thanks...it should be ok...it looks like pink and black....I'm going to run some tests now....

Oct 28, 2019 | 05:10 PM

#19

Schultzy8777

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Joined: Oct 2019

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Do you still have the notes and or pics from putting a manual switch in?

Oct 28, 2019 | 06:59 PM

#20

brettcp

New User

Joined: Dec 2012

Posts: 10

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Sorry I don't, I ended up pulling the tank and changing the fuel pump, I do have the service manual, what is it you need?

Quote:

Originally Posted by Schultzy8777

Do you still have the notes and or pics from putting a manual switch in?

Jan 13, 2021 | 04:53 PM

#21

caprieno

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Joined: Jan 2021

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I need that if your still offering

Quote:

Originally Posted by WhiteZombie

the reason your power could be shutting down after a second is because the wire is cutt and the computer is not telling the power to the pump to stay on. i recently had a similar problem when i went from efi to carburated in my truck. my stock pump would turn on then turn rite off because i was not running a computer to tell it to stay on. i hope this helps and you get your truck running rite

So I'm doing the same as you had mentioned! I swapped my efi back to carbureted... And she starts for a min if I prime up the fuel line by cycling the key a few times, but when the line goes dry she's done. The pump isn't staying on after it starts! So I'm wondering how you hard wired the pump,
and or how to solve this problem?

Dec 24, 2025 | 01:06 PM

#22

DerDicht

4wd Low

Joined: Oct 2012

Posts: 10

Likes: 0

From: Pie Town, NM

Fuel pump wiring info

Do you have this diagram? I printed one out, I think it was this one, basically just the wire colors for the front and rear and what they went to. I can't find my print out. When I returned the diagram is no longer available. I know this is from 2009 so you may not have your original. Thanks, Stephen.

Quote:

Originally Posted by subford

It sounds like the Black/Red stripe wire is working right for an 88 E-series but it should be a BR/W on an 88 F-series.
It should have power on it for one second when the key turned on.
The black wire is a ground.

Here is a diagram if you have two tanks.