Maybe to check and see if the aftermarket shop that did the camper installation hooked the wires up correctly on the thermal breaker fuse ?
(see attached picture)
The wire on the brass post of the thermal breaker fuse should be hooked up to the battery in your trucks' engine compartment.
The wire on the silver post of the thermal breaker fuse should run back under the truck to the aux. camper battery.
Thanks for this info. I have several of these breakers in my boat. They were sold loose without instructions. I'll double check to make sure they are all wired in the correct direction. No markings on them other than the different colored terminals. Never had a problem with them so far. They've been in use a few years.
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