Backroad Explorer
Adventurer
Craig is the white wire on the upper right the ground & the wire with the blue connector lower right the hot wire? If so there lies your problem!
Craig I think he means RV not TV!
^^What are you talking about? The box was never wired to work. The trailer is a four prong.. The driving lights and markers are controlled through the truck pigtail.. Everything else will be controlled be the Marine Battery on the front of the trailer.
Easy there hot rod. He is right.
That 7 slot fuse block is normally used exactly as he said. The wires from a 7 pin trailer plug go into one side, and the wires out to the trailer's lights on the other side. By using a fuse rated lower than the fuse in the truck, if a trailer light shorts and blows a fuse, it'll blow the fuse in the trailer's fuse block and not the fuse to the truck's lights.
I didn't say anything about it, because I could see from your photos that you weren't using it for that purpose.
But now that I think about it...
You could go ahead and use it the same way - but of course, you'd only use 4 of the fuse slots instead of 7. (Actually, 3 I suppose...)
(That would be separate from the electrical accessories wiring that you are installing with the bus bar fuse block...)