groundhogy wrote:
Im thinking melted something at this point, due to the fact that completely unrelated circuits are interacting.
But that is a great suggestion about the fuses.
'03 in PA?
Time to take a deep hard look at the wiring harness from the back all the way up to the front, it is possible you have a crushed or partially damaged wiring harness.
Check your bed crossmembers, good chance they are rotted out causing the bed to drop which can pinch the wiring harness..
I was lucky to have caught and repaired 3 of the front bed crossmembers that rusted out and were holding up the bed by the paint leftover that didn't fall off on my '03 F250..
Also a possibility of water intrusion damage to any wiring harness connectors from the rear all the way to the front on that same harness.
Vehicle lights not working correctly after towing may just be a coincidence as all of the trailer lighting wiring is completely isolated from the vehicles lighting via relays and separate fuses.
While you are digging around under your truck, inspect the fuel tank straps.. You are way overdue on those buggers as they rot out even faster than the rest of the truck.. Had a '06 that the back strap rusted out and dropped the tank, the filler hose was holding the tank in place :E .. Ford had spot recalls on the tank straps on F150s but not on F250-F350 in early 2000's :M
