where to get trailer plug wiring diagram

[hotairgypsy]

My dual plug in the back is not working properly. I found corroded wiring so i need to replace. What i want to know is where in the cab can i cut and tap in so i can run new lines from the inside to the back of the truck? Want to replace as much as i can of the bad wiring.

wiring diagram and body location would be great..thanks for any help

[Zaairman]

Go take a picture of what's hacked up. Hopefully you will only have to replace the last 18" or so.

[Macon]

That's how it's wired into the plug. It should also be marked on the plug. Best way to do it if you're wanting to run a whole new cable assembly would be to just start taking it out. I think Zach is on par with just replacing the last 18" or so. If you actually have an issue somewhere along the cable, replacing the whole thing may be less painful though. Every time I've encountered corrosion, it's only spread about 3" under the insulation, so cutting out 18" would remove all corrosion, and give you a little bit of working room for the splice.

Liquid electrical tape covered with heat shrink would weatherproof your splice, or you can get the adhesive laced heat shrink that will weather proof it in one shot. A little more expensive than standard heat shrink, but I love the stuff.

[hotairgypsy]

where i located the corrosion was to the side of the spare tire so i know i have to replace from spare tire back to cab. I was hoping to figure out where in the cab it is so i can just tap and go with new wiring.

[ProOnThaSnow]

I may be wrong, but I think you can unplug the harness at the front of the bed? For some reason I think thats what I did when I replaced the bed on my '01. If that's the case just order that harness from Ford from the cab back.