I have a 2001 f250 v10 lariat ext cab. i was going to get wood the other day down a muddy road. My radio went out and all my running lights. i replaced the fuse radio and now the switch. Still nothing. Could it be a bad ground? i ran a jumper wire on my old switch and they worked then just stopped again. if it is a bad ground where would it be located.

 

Check the tail light wires in and under the bed, that's what got me. Popped a fuse under the hood.

 

did you check the fuse thats under the hood and not just the underdash panel? Cause i've had that happen to me and the fuse under the hood blew and thats what the problem was.

 

My trailer light fuse blew. Then my trailer light hook up. The small one has wires torn out would that be the issue?

 

If the wires are pulled from your flat trailer connector that is very likely your problem. You could try taping the ends as a temporary fix. If you don't need to pull a trailer for awhile you might see if you can unplug the trailer harness from the main harness until you can fix it.

 

I dont pull trailers. But ill see what I can find