Brake light issues
I'll try to keep this as simple as possible. At the rear of the coach I have the 7 pin receptacle. I plug in my 7(which is actually 6 pin as the center is blank) pin to 4 pin adapter and it has right ...
Forum Discussion
Time to get out your trusty voltmeter and do some checking. Google: "Trailer wiring adapter diagrams" and you'll find plenty of diagrams showing what the pins should do. Your problem is in one of three places: the magnetic lights/wiring, the adapter, or the coach wiring. Your voltmeter tests will narrow that down pretty quickly. If it is the coach, I'd suspect a fuse is blown somewhere. A new adapter is fairly inexpensive, and the lights wiring is pretty straightforward, likely a connection. Since you have some, but not all, lights indicates that your ground is likely good.
