We have spent more hours that necessary trying to get our brake controller to work. We actually have tried 2 different ones.
The first one displays a "short" signal.
We checked all wires and we can't find any chaffing etc.
We installed a simpler controller and it works in reverse but not forward.
Any ideas?
We found the culprit. Followed the blue wire back and whomever originally installed it let it rest against the catalytic converter and that fried the wires. Spliced and re-routed and it works!