OK, so I lost this one. The breaker cat in Austin, Texas, aka LamontSanford (I love that), had both handlebar switch assemblies off an '81 R65. As I mentioned, I didn't "win" them but hopefully someone among us did. What amused me though, and is the curse of these auctions, the left-side assembly went for more money than the price of a new one from Chicago BMW. I know this because I called 'em in the Windy City!
So what? Well, this afternoon I took a short ride on the R65 outta town the Cowboy Way. Just enjoying the cooler, relatively speaking, 95 degree temps. Stopped for a wifely errand and noticed my oil pressure lamp was on even with the engine shut down. Toggled a couple switch thingys and it finally went off after I punched the starter button! This cannot be a good thing.
Got home and popped open the headlight shell and noticed the low and high beam power wires were in contact and had, for some reason, melted part of the plugs insulation. DVOM showed OK on circuit integrity but the ignition switch -not standard BMW- no longer functioned. Double harump.
Long story short... The high / low beam switch on the left side switch assembly -the one I lost on eBay- was in a sorta middle position and was not playing nice with the power to the headlight. Toggled the dip switch to a correct position and the problem went away. Fixed insulation issue.
Glad I called Chicago!
Monte