Re: Does install of brake controller activate trailer battery charge circuit??
I just did a charging setup on my trailer, the power is already on, and connected to a 30amp fuse seperate from teh other towing fuses. I ened up running new power and ground wires with a AUX relay. The wires used for charging are 14-16gage from the factory, really small and i found the ground on the trailer getting warm. not to mention your not gettting much of a charge with that size wire at that lenght. I was able to find a replacment 7/4 way that fit in the same spot from e-trailer and wired 6 or 8gage hot and ground with a 30amp fuse on the truck side and trailer side it works great
2014 Black Limited with ORA II and 8.4