I have a 2001 f650gs bmw. When I first start up my bike and am accelerating in first gear my speedometer works and the ABS light is off. However, once I start going in second gear my speedometer stops functioning and the ABS light turns on. The brakes, however, still work fine... I'm not sure if the ABS system is still engaged... I should probably test that. I don't think this situation is dangerous but I want to make sure and to know how to fix it. Thanks!