Paul Fithian
Member
Here's what I did to get a power tap to the rear bumper for a 3,500 lb electric winch on our boat trailer. I am using the truck chassis as a ground, with new 4 AWG ground straps at the battery and rear bumper. Fastronix top post battery terminals are excellent, highly recommended.
Power is fed with a 4 AWG wire through a 150 amp breaker/switch fastened to the top of the fuse cover with Xmas tree push pins. There is enough slack on the input/output wires to allow the cover to rotate out of the way to access fuses. I mounted a Trailer Vision cover to the rear bumper for a 175 amp Anderson plug. A mating plug on the trailer will plug into this and feed power to the winch on the boat trailer.
Power is fed with a 4 AWG wire through a 150 amp breaker/switch fastened to the top of the fuse cover with Xmas tree push pins. There is enough slack on the input/output wires to allow the cover to rotate out of the way to access fuses. I mounted a Trailer Vision cover to the rear bumper for a 175 amp Anderson plug. A mating plug on the trailer will plug into this and feed power to the winch on the boat trailer.