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Chris (f350-6) that is good information on the location of the fuse block in 2002 and later. It can be very time consuming to find the source of electrical problems.
Good luck to yfz 450. Please let us know if you find out where the problem lies. I do not remember if you unplugged the last short harness that goes to the trailer receptacle at the bumper to test. It is only a few feet long and can often be the cause of loss of power. The connector between the two harnesses can get corroded or the wiring can be exposed to damage. Larry
I'm just setting up a new utility trailer. I got turn signals and brake lights, but no running lights. Truck is a 2011 F350. Got any ideas? I have checked the trailer and it is wired correctly. Truck lights work corrrectly. Only cant get running lights on the trailer. Is it possible that the BROWN wire from the truck has a blown fuse?