Trailer Brakes working part time.
I have a 2008 Keystone Everest and a 2008 GMC 3500 with factory brake controller. When I plug in my Everest I have no trailer brakes. If I turn off the ignition key and turn it back on, the trailer ...
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I had same issue with F250 Ford, it was the factory brake controller, go to trailer shop and have 7 pin tested. My factory controller was not putting out enough 12v
