Ok so I was at my Dads today and noticed a pulsating tapping noise coming from the brakes. It turns out that our 2012 and 2014 Ram 1500s have a pulsating voltage coming from the controller. This would seem to allow the magnets to catch and expand the brakes. Granted, it was only a max of 1.2 varying down to .02 at times. Checking into this situation further it seems to be a common problem while Ram does not want to acknowledge the problem. Someone on another forum said to put a 12 volt light bulb in the blue trailer brake line as a resistor to drop that pulsating voltage before it gets to the brake magnets.
