1. Do you now understand what the problem was?
I think that I have an understanding of the problem, the left rear light housing is not receiving a good machine ground, most likely from rust etc. from where the housing connects to bed support.
2. Did you fix it or want to know how to fix it?
Did not have a chance to permanently fix it last night. My thought is to remove light housing and make sure there is bare metal on both housing and bed support for a good ground connection when light is re-installed.
3. I don't think a theory or two of why and how it created the "phenomenon" you observed is useful. We have said that ground will try any path available. Thru another filament or whatever.
OK, but thanks for providing the commentary and theory.
4. If you have not fixed it permanently, I can help do that after a question or two.
Any additional help would be appreciated. You'd mentioned providing some info on how to properly join wires etc. That would be good to get. Normally I use the tube-type butt connectors that you crimp, with heat shrink tubing if the connection may be exposed to the elements.
