We have an E350 RV. Top front running lights have no ground. Can anyone tell me when that ground might be?
Ruth1942

 

Where that ground might be? Not when sorry,
Ruth1942

 

RV's is similar to cube vans?

The marker lights are grounded to the body/box frame, in most cases, the mounting screw/marker light is rusted out, losing the ground to the body.

There is only a 12v positive wire to the marker lights, "feeding" voltage to the bulb, and the the negative ground wire is attached at some point to 'ground' the entire body.

Replacing the rusted out lights, with new mounting screws usually solves the problem, and if needed, add an additional ground wire from the box/body to the frame to ensure a good ground source.

 

Thank you, we will replace the lights first and hope that solves the problem.