BF has worked and worked on our Montana and it kept doing what it always did, which was act fixed and then quit working. He took it to a mechanic a friend told us about and finally it is working. BUT it took them twice too. lol. First they found where the BF redid the splicing and connecting that the ground wire had a shear plastic around it that stripping the insulation didn't take off. He paid the bill and took it down the road to home when all of a sudden they quit working again. Back he went and they they took the wheel off, the ground had come off the connector to the magnet and had been rubbing and had bare spots. Now it really is fixed. yeahhhh
Funny thing is the brake controller on another truck showed faulty ground while idling. That is all it ever showed.