Factory electric brakes lock up, why?

Asked by Ripper Mar 28, 2014 at 06:58 PM about the Dodge RAM 2500

Question type: General

I bought a 2013 Ram 2500 (hemi) with the factory brake controller and just hooked up to my trailer for the first time. The electric brakes instantly lock up. I tried switching from heavy trailer to light and adjusting the gain, nothing works. Any ideas?

2 Answers
12,595

madmopar answered 10 years ago

are you using an adapter to go from the factory 7way to a 6way? if so, you are using the wrong adapter. there are 2 correct ways to wire a 6way. one has the brake wire on a side terminal and the auxiliary power to the center. the other has them reversed. if your adapter will let you change these 2 wires, do that and you should be fine. otherwise you need the other adapter.

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