I'm still trying to localize the problem with my intermentant failure in the headlight. I have checked and cleaned the ground wire. I also cut off the switch and spliced the wires together so as to make the headlight an "always on" type. That didn't make the problem go away, so I know the switch wasn't bad. One thing I've noticed though is that headlight only dies while on the road [generally while at full throtle]. I've only had it die once while on the kickstand. Any thoughts?