The light on mine just runs on batteries. Got it from eBay and it is just a small LED light. It last pretty long but not super bright, only have it on there if I get stuck in the dark or I want to be seen better. It has a flashing mode, which I like. Had to tape the front piece on with electrical tape to keep the vibration from making it fly apart. Also, cheap turn signal, stop light, and horn unit from eBay as well. All will be wired into a motorcycle type control by the left grip.