Well I got a S750 second hand, the throttle was cracked and when you turned on the power the thing would shoot off full power right away without even touching the throttle.
I thought I would try a new throttle for the mentioned reason and because it was cracked. The throttle connects to the controller through a six pin hook up. The six wires are gray, blue, red, black, and orange, the gray and orange wires connect to a circuit board with 4 LEDs the red, black, and blue I assume connected to the throttle part, (The damn thing came apart on me when I removed it). The only source for a new throttle seems to be http://www.monsterscooterparts.com/cutwgrth5pin.html but they are out of stock, any one know of any other places to get one?