You really need to figure out what you have first. I wouldn't spend a dime yet. You can buy all the stock parts you want, if it's a race ski with an aftermarket flywheel in the mag housing that won't play with stock parts. You'd literally have to buy every wire in the ski, the mag, stator, ebox, rear ebox and the list goes on. Or if some electrical engineer went all science project on it. So when you get a chance, post pics of everything.