Well, I finally found the brown wire! I also installed my new rear brake disc and pads on Saturday. It cost about 150 bucks and took about an hour. Rode 400 miles saturday and this thing ran like a dream. I should have searched for that wire alot sooner. I bought a switch from Rat Shack like some of you but, do I even need to bother? Is there any benefit to reconnecting the wire. The outside temp went from about 75 in the AM to about 95 in the afternoon, and there was absolutely NO hesitation! I love this bike again!