Having a problem with the running/marker lights on my 1975
Sovereign International. We just picked up this trailer a few months ago, and almost all of the marker lights were replaced when we had the rig safety inspected so that we could get it plated.
We saw the lights in operation at the shop a couple of months ago. But when we hit the road, we noticed that we had no marker lights at dusk when our TV headlights came on ... so we pulled off the highway and stuck to daylight driving only.
We determined that the running light fuse in our TV had blown, so we replaced it. As soon as we turned the headlights on on our TV (with trailer connected) that fuse blew again.
I figured we must have a short. Confirmed this by removing all of the exterior bulbs and testing for continuity across + and - at the marker light socket. Virtually no resistance with all the bulbs removed = short circuit.
Somebody suggested that a replacement mounting screw might have nicked a wire, so I removed ALL of the mounting screws from the running lights. As a result, they are no longer grounded. But I still meter continuity across ground and running lights at the 7-way connector, with or without the umbilical attached.
I’m thinking about pulling the lights off of my Airstream to inspect whatever there is to see of wiring behind the fixture. Does this sound l8ke the right next step? Is there a better place for me to look next, perhaps the connections inside the trailer side of the 7-way?
Thoughts and suggestions apreciated !