rhm

Thanks for your reply, and all the information! But please consider this: Let's say I wire the lamps without a bridge rectifier, so the wire goes to the positive terminal of the headlight and the ground goes to the positive terminal of the tail light; then the AC current would alternate between the head and the tail lights. There would be a flickering effect at low speed (bicycle dynamo lights always flicker, but this would flick more). Would it work? Would it damage the LED's?