JRscooby wrote:
JoeChiOhki wrote:
JRscooby wrote:
I'm having a hard time understanding a "3 pin". If the camper has only marker lights, 2 would work. And turn signals, got to have 4...
It's probably a short unit that doesn't block the tail lights, so it like only has 12 +/- for cabin power, plus a marker lights circuit.
Thank you. After I posted I thought of a shell with a high mount brake light...
If it's old probably not a high mount brake light . More likely 12v interior light , marker lights and ground . Easy enough to check .