The previous owner of mine had drilled a hole in the headlight bucket and mounted a switch in the top of the bucket. I didn't like that idea. I don't even remember what that switch was for as the bike didn't even have a light bar on it at the time.
When I mounted my light bar, I put one of those three toggle/rocker illumintated switches that you mount to the top of the clutch reservoir. Like that much better.
