Same problem with my wifes bike. It was the voltage regulator. The bike was charging 18 volts. Blew out every bulb in the bike except for the turn signals. New regulator and bulbs now good to go. Good luck, put a volt meter across the battery while running and check your voltage.I've got directional and emergency flashers running now. I swore they did not work before I jiggled the key for the umpteenth time. No idiot lights though & no cranking. Battery is fine. I'm leaning towards ignition switch failure. Has can I test it? Don't want to spend money I don't have to.