Originally Posted by IdahoRick
2021 Entegra Esteem 29V E450 chassis - class C
When I turn my headlights on (even just to parking lights position) the reverse lights come on. This also keeps the rear view camera turned on. If I don't turn the headlights on, everything works fine. I'm sure it's probably two wires touching but without a wiring diagram, I'm having a hard time isolating circuits to find a short. Any help would be AWESOME!!!!
Quite possibly it's a bad ground and the headlights/parking lights are finding their way to ground through the reverse light circuit.
First question, are the bulbs for all these lights in the same fixture? If so, check to see if the wiring is correct at the plug. Is the hot actually going to the correct part of the bulb holder and is the ground actually grounding the outer metal part of the bulb holder?
Try running a separate ground wire from the metal surround of the bulb fixture to a spot on the frame, especially for the parking lights.