Tried using my heated grips today when my hands got really wet in a welsh rain storm, and the left one has stopped working!!! Any ideas what it could be? If I need new ones (the rubbers are fairly worn from the last owner who must've been shit scared of the bike!!!) where is the cheapest place to get the original style grips. Don't want Oxford grips (although I have used em and they were quite good) because I like the proper BM ones. Cheers peeps.