My 520exc keeps blowing out my headlight withe the time being anywhere from 30 seconds to 10 mins. I've also noticed that if I go over big bumps or do a wheelie it'll blow right on impact. I'm just using H3 bulbs from the auto store and have tried 3 different brands. Also something that could be related is my battery that doesn't charge well (could be a bad battery). I'm thinking it could be the stator but don't know what to test.