I have a 2002 or 2003 F-550 XL super duty. The parking lights wont come on but the clearance lights do. If i jumper a hotwire to the parking lights and then remove they come on and STAY ON reqardless where the switch is. The switch is new. also, the only way to get them to turn off after removing jumper is to pull a 20a fuse in the fusebox or to disconnect the batterys. I disconnected all wires for the plow, and the dump box on it with the same results. I was thinking it was a problem in the fusebox, but before buying a new fusebox, wanted some advice.
thanx in advance (first post here)