I always blow my headlight and taillight bulbs pretty quick. This moped never had a battery in the first place. Maybe they're the wrong bulbs? I measured the voltage that goes to the headlight, and its actually 12 volts according to the meter, but this is supposed to be a 6 volt system???? or maybe the volt meter is off, it's a crap one. what is required to add a battery on a moped that never had one? just a rectifier of some sort to make it dc? A battery would be nice for increased visibility and the possibility of adding a tachometer and a radio which would need constant voltage