I assume that is what they call it, the black box on top of the battery cover. I changed the battery and then had a no spark from the green wire breaking. After repairing, the bike started. In my research on the issue it seems to be a common problem for the black and green wires to break. Out of curiosity, what are the wires for? Obviously it impacts a spark signal in some way, but I wanted to know more. I cannot find a wiring diagram to tell me. Anyone have a service manual they could look up what they do for me?