Running lights/ trailer
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Running lights/ trailer
I have a problem with my electrical plug on my truck..all connections work except running lights.. I've traced/probbed wires to harness connection no power on either side..stumped
Hotshot
Joined: Jan 2002
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From: La La Land
That connection is powered by a relay to protect the truck's electrical system from over-loads in a trailer. The power to the relay, and to it's coil, are both protected by fuses.
If you could give us your truck's year, we might be able to come up with a wiring diagram, along with fuse numbers and locations.
Pop
If you could give us your truck's year, we might be able to come up with a wiring diagram, along with fuse numbers and locations.
Pop
Lead Driver
Joined: Jul 2003
Posts: 7,406
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From: Wheatland, Mo
What Pop said.
There is the bank of fuses under your dash, (Which I am sure you already found), but there is also a Power Junction Box, (Fancy for... another fuse panel), under the hood on the drivers side against the firewall. There are fuses in there for trailer towing too so make sure those are all good as well. Your manual should have a diagram of what is what. If you don't have the manual then I am sure someone here will post it for you.
There is the bank of fuses under your dash, (Which I am sure you already found), but there is also a Power Junction Box, (Fancy for... another fuse panel), under the hood on the drivers side against the firewall. There are fuses in there for trailer towing too so make sure those are all good as well. Your manual should have a diagram of what is what. If you don't have the manual then I am sure someone here will post it for you.
Hotshot
Joined: Jan 2002
Posts: 17,988
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From: La La Land
We also have a place for you to download an Owner's Manual for yourself to print out if you don't have one in your glove box.
We need the year of truck, however.
BTW, later SuperDutys only have one fuse panel, and it's under the instrument panel. Ford deleted the under-hood one (I believe) in 2001 or 2002.
Pop
We need the year of truck, however.
BTW, later SuperDutys only have one fuse panel, and it's under the instrument panel. Ford deleted the under-hood one (I believe) in 2001 or 2002.
Pop
Lead Driver
Joined: Jul 2003
Posts: 7,406
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From: Wheatland, Mo
Thanks for the info Pop. I didn't know that. And here I have been looking around for an 03 with the 7.3 in it. I would of thought something was wrong when I didn't find it under the hood. HA!
Lead Driver
Joined: Jul 2003
Posts: 7,406
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From: Wheatland, Mo
On mine I have seperate fuses for each function...brakes, battery charge, left turn, right turn, parking and backup. All functions are not controlled on one fuse.
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Lead Driver
Joined: Jul 2003
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From: Wheatland, Mo
My truck & manual is at home but I can check it out and post back later today.
If you have the under-hood fuse box, then it will help. But if like SpringerPop said, not there in the 02's, then hopefully someone else will respond.
If you have the under-hood fuse box, then it will help. But if like SpringerPop said, not there in the 02's, then hopefully someone else will respond.
Posting Guru
Joined: Aug 2008
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From: No.Va.
and a bjb (battery junction box) under the hood.Both have fuses.
The bjb on the later models have most of the tow fuses,relays.
Hotshot
Joined: Jan 2002
Posts: 17,988
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From: La La Land
kdexter,
Go here to download an Owner's Manual and print it out so you have it available. There's a whole section describing which fuse does what.
https://www.fleet.ford.com/maintenan...ls/default.asp
Pop
Go here to download an Owner's Manual and print it out so you have it available. There's a whole section describing which fuse does what.
https://www.fleet.ford.com/maintenan...ls/default.asp
Pop
Lead Driver
Joined: Jul 2003
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From: Wheatland, Mo
Thats what I meant. Sheesh! Couldn't ya read between the lines? hehe
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Just want to give a Big Thanks to FTE-members on the responses on helping with my lights.. Sure enough #38 fuse was blown.. As soon as I got off work ,Checked fuse/replaced hooked up to trailer and headed to Frankfort,KY (3hrs) to get my sisters Chebbie, Long road trip.. Sorry for the late Thank you's..