So, turns out every LED lights needs to be grounded. This is easy for brake lights, since you should be running, at a minimum, flat 4 wire harness. However, I'm running into a small hurtle; Grounding rhe new marker lights. I'm replacing the old, shot, incandescent marker lights with waterproof LED. Normally one would use a wiring fish and feed that through, however, good luck on finding an easy route with that, LOL! Anyone have any 1962 Shasta Compact wiring or skeleton (framing) diagrams, or effective ideas?
I ran a small pigtail from the marker light to a sheetmetal screw through the skin and covered by the light housing. Working good for me. The skin has ground connections in 2 spots leading to main ground wire.