Five wires (Plug): gear indicator. Pink (or Yellow) wire: Charging. Black & Red wire: signal trigger. Blue & White: trigger coil.It comes with: Chain case and Gasket , 35mm Air filter, PZ19 Carburetor, complete wire harness, exhaust pipe & muffler, throttle , hand grips, 420 chain and sprocket. All these parts can make your motor run. The item "125cc Semi Auto Engine Motor Kit Carb, Wire, Exhaust Reverse ATV Quad Tricycle" is in sale since Wednesday, November 11, 2020. This item is in the category "eBay Motors\Parts & Accessories\Motorcycle Parts\Engines & Engine Parts\Complete Engines". The seller is "tdpro99" and is located in Dallas, Texas. This item can be shipped worldwide.