Tail light stays on

[simp6216]

Just noticed that my right tail is staying lit. Camper is unplugged from truck and shore power is plugged in. Bulb is ok. Where do I start troubleshooting this. Thanks
2012 sunset trail

[Papa-T]

Try this: https://www.etrailer.com/question-43047.html

[Papa-T]

Or somewhere along the wires running through your trailer, there is a bare connection between your right tail light wire and the power wire that connects to the battery.