Just failed an MOT because the low beam did not come on with the ignition. Fuse C, relay (which cuts the light on starting), bulb ok. Fiddling behind the head light just lost the parking light as well. So time to swallow pride and ask for advice. Local bike shop won't touch a BMW. Would a BMW dealer do any better? The rep rom just advises substitution of the left hand switch which does turn the high beam on but not low beam. I don't understand electrics this complex. Obviously! Any advice would be gratefully received.