Well if it was running and then just stopped I would think it is some sort of sperratic grounding issue. Your right though, those bikes will vibrate the fillings out your teeth!
Have checked all the ground points, actually took them apart and cleaned them up using a dab of dielectric grease when putting them back together. Not saying it could be a ground wire issue (cut/stressed wire) inside the harness. Seems like damn near every electrical problem I have ever had is ground related...Very frustrating.......it craps out, by the time I get pulled over and dig the test light out of my bag it will start.