Rear Marker Light issue on 05 Land Yacht 30SL
I was trouble shooting a single red marker light over the rear window and found a corroded bulb and socket. I ordered a new light fixture from NAPA and then removed the old unit. The old one has 2 black wires, I guess that is due to the fiberglass body having no ground path. The new unit has only one wire and I guess that the fixture and screws are part of the ground path.
Now the problem: When testing the old socket with a volt/ohm meter I lost all of the red lights above the rear window and the three driving lights on the drivers side only. I checked the fuse and it is OK, and when removed all markers (yellow & red) and all tail lights go out, and come back when the fuse is replaced all but the ones mentioned earlier.
In my limited knowledge I would say that I blew a fuse or opened the circuit in the path of the lights that are not working. I have no DC at the wiring that I was working on at the defective socket. Could there be another fuse I'm missing? It reminds me of a Xmas light string.
Any help would be much appreciated!