A converter module is a powered “relay” of sorts that connects to the tow vehicle, taps into the vehicle lights, and sends outputs of those lights to the trailer.
So this is part of the harness they used for the trailer wire install I believe. It should be plug and play with the proper ends to the tail lights so that should be good. When you lose trailer brake lights is this the only thing that fails? No fuses blow etc.
They didn’t tell me any details other than what I said below. “We found a factory screw was accidentally run through the wiring harness and we fixed it.”
Just wondering if when brakes are applied there is a short to ground back feeding the circuit. Or if it occurs when you plug in the trailer plug it back feeds and kills the converter that has been failing.
Nope. I only own one RV..
Just thinking of a way to duplicate to confirm what side of the plug the issue originates.
Either way it sounds like this converter in the harness is getting voltage in a direction it doesn't like.