Discussion Starter · #1 ·
2000 F-350 drw, 7.3, 6 speed, just rewired my trailer and added some side markers and also wired backup lights on the trailer. Used it today and of course it was raing all day but it has blown the #4 fuse 2x's today, it is in the fuse box under the hood. Is this due to to much load with the extra lights, or coming from the backup lights. they only come on when the truck is in reverse. Or could the rain be shorting something out. Thanks for any help.