I've an 03 GT200 and the main bulb in the headlight is not working on either dipped or high beam. I've checked the bulb and it looks okay but I tried a replacement anyway and still no joy.
I checked the fuse; according to the handbook the 10A one covers this bulb, the seat release and, interestingly, the high beam indicator light in the speedo which also doesn't light up when I switch to high beam although that could just be a blown bulb as I use high beam so little I've no idea when this stopped working. The fuse looks okay.
The scooter's still under the extended 3 year warranty so I'll probably end up taking it in to the dealer but if anyone has any other ideas I'd be happy to hear them.

By the way the site's great.