Sierra MP39100: Magneto 3 Position 11/8″ Polyester 5 Screw Terminal 12V 15 Amp Ignition Starter SwitchPolyester Switches: Provide maximum corrosion protection and eliminate potential shorts. Inner seal between cylinder. Does not include push to choke or boot and has a 7/8″ Mtg hole. 3 Position(Off – Ignition – Start) lock and contact plate. 30 Amp