Ok so I'm in the process of rebuilding a wrecked bike and I"m almost complete. None of the lights were working except the blinkers and the brakes only when applied. I checked the fuse box under the left clip on and the light fuse was blown. Replaced this and now all the lights are working except the low beam. High beam light turns on when I switch it on. And yes I know that only one light runs on low beam. It isn't working. The bulb doesn't appear to be blown. Any ideas what to check next?