I just began having a problem with my 77 xs750 lighting system. when I turn the ignition switch to the start position, none of my lights are on, including brakes, headlight, turnsignals or even my horn. Starter however works and will start engine and run fine, just no lights. When ignition is turned all the way to right, all lights come on but bike won´t start. This started when I was riding one night and all the lights just suddenly went off, but didn´t affect the engine. Heeellllllpppp???