I've never re-wired a Motobecane, but give me 20 feet of wire and half an hour and I'll re-wire a Minarelli. It's like they were made to be tinkered with. My Minarelli is without a doubt the crappiest looking moped in the Decepticon Moped Army, but it's still my favorite moped. Check out a pict in the member's section.
daveb