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Fuse box wiring diagram

Tiny
NUTTY.ONW
  • MEMBER
  • 2004 FORD F-250
  • 5.4L
  • V8
  • 2WD
  • AUTOMATIC
  • 170,000 MILES
The fuel pump relay built into the fuse box has melted and I'm looking for the wiring diagram for the back of the fuse box so I can try to put in an external relay.
Wednesday, August 5th, 2020 AT 8:44 AM

8 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good afternoon,

I attached the connector with the fuel pump control circuit in it.

Why do you not just get another fuse block? How much wiring damage was done?

Roy
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Wednesday, August 5th, 2020 AT 9:48 AM
Tiny
NUTTY.ONW
  • MEMBER
  • 5 POSTS
I've been looking for 3 weeks and everyone is different. I have the truck listed above super duty XL. Only extras are A/C and a radio. Has to match or they don't work. The wiring problem I'm having is there are 2 green/yellow wires needed the wiring harness has 4 green/yellow wires. The other wires I have figured out.
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Wednesday, August 5th, 2020 AT 4:42 PM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Okay, got it.

Can you post a picture for me of what you see with the wires? I need to see what you see.

Roy
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Thursday, August 6th, 2020 AT 4:58 AM
Tiny
NUTTY.ONW
  • MEMBER
  • 5 POSTS
Best shot I can get.
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Thursday, August 6th, 2020 AT 5:38 PM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Okay, thanks, where are the 2 wires that you have left to hook up?

Roy
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Friday, August 7th, 2020 AT 4:16 AM
Tiny
NUTTY.ONW
  • MEMBER
  • 5 POSTS
Sorry if this sounds bad but if I knew the 2 wires I wouldn't have to ask and any help is grateful. A closer look there is 5 green/yellow wires and I need 2 of them. That's why I'm looking for a wiring diagram to show what each wire is.
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Friday, August 7th, 2020 AT 7:17 AM
Tiny
NUTTY.ONW
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Finding the right fuse box is not easy as it sounds. Thank you for your help but that isn't the fuse box I have. I did finally find a fuse box and ordered it.
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Sunday, August 9th, 2020 AT 11:33 AM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Okay, keep me updated on how it turns out.

Roy
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Sunday, August 9th, 2020 AT 11:40 AM

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