Lighting drawings here:
https://www.winnebago.com/Files/File...ire_186405.pdf
Two different styles shown but the wire layout appears the same, so I drew up this one for talking!
Click this snip for a better view!
It looks like the wire set comes in near left lower and goes across, up and around.
First I would verify if the problem is with the power or the ground side. That cuts the chase in half, so you only need to check one wire, not two!
If the lights further out on the string work. I might suspect the connection from this specific light fixture to the main run???
__________________
Richard
Why no RV year, make and floorplan on MY signature as we suggest for others?
I currently DO NOT have one!