[Rick Lee]

Success. I don't know exactly how this worked, but I ran a wire from the ground spade on the switch to the ground wires from the foglights, joined them all at the nut and bolt on the frame and the LED lit up.

Next problem is how to mount the damn switch. I had used some 3M Dual Lock to mount it to my instrument cluster. But once it got hot outside, that glue was basically oil. Then I tried some of that double-sided foam tape. Ditto. It's so damn hot here, no glue works. I don't want to drill or cut into the plastic on the bike anywhere. I wonder if Krazy Glue works in the hot climate.