I recently dusted off and got my 1977 Puch Maxi running after a short 17 years of neglect. However, my headlight, taillight, and brake lights are not working. Interestingly, the horn is.... The on/off kill switch seems to be fine as is the speedometer, but no lights on the speedometer either. Before I cause any issues I was hoping to get a few tips on what path I should start down in an attempt to get the lights operational. Any advice is appreciated. Thanks!