I've got a GMC classic body style 07, installed the brake controler using the factory supplied harness in the glove box, and the trailer battery is not charging.
It is a new trailer, so I'm fairly certain its wiring is functioning properly.
Called the trailer dealer, told me there is more than likely a dummy fuse that needs replaced with a real one in the fuse panel.
Anyone know where that might be? or if that is even the case?
07 GMC 2500HD, trailer batter wont charge?
