I have a goped model gsr40 to those who know. This model has a pullstart and does not have an electric ignition, thus no energy for lights or other electrical aspects. What i have conceived is an electric generator that i would make and get to spin off of the rear drive sprocket which would rotate at whatever speed the wheel turns at. This would work, but a few things come to mind: there is no power if the wheel is not spinning, there is no way to regulate the voltage. What i decided on was some kind of resistor? to make the flow from the generator constant, and i want to have this constant electrical flow charging a battery that i could then run the electrical components off of. Thus when the wheel stops, i still have a battery powering the lights. I am by no means an electrical info source, but am a genius capable of doing what you folks advise. So if anyone sees a solution or a rift in my post please respond. This is my PROPOSED course, if you have a better one by all means share. The engine is a 2.5 hp whcih at top speed will go about 34mph, i may get mods permitting speeds of 50+ so keep this in mind.