Originally written by Sunnyfield on 2013-06-23 12:54 AM

I have been looking for a diagram of the wiring to install my 12v battery and breakaway switch to my horse trailer. My battery has a red side and a blk side. I understand so far that I should take one wire fr the breakaway and splice it into the blue wire on my junction box fr the brakes. The other wire on the breakaway being wired onto a wire that will be the hot wire (red side of battery?). I also want it to be able to get a charge fr my 7 pole connector fr the vehicle, so I am not sure how to test which slot is the one that will be giving the charge from the vehicle side to the trailer connector. I would assume that my blk side of the battery will have a wire going to ground on the trailer and then the hot wire (red side of battery) will have a spliced connection that goes to the brakes and also another wire that is receiving the charge from the vehicle. Is this correct?