Hey there motorcycle enthusiasts! If you're dealing with electrical issues on your CG or GY6 engine, this WOOSTAR voltage regulator rectifier might be exactly what you need. This 5-wire, 5-pin unit is built to handle 12V AC systems and works with a bunch of popular small engines - we're talking 125cc, 150cc, 200cc, and even 250cc models from brands like Taotao and Lifan. It fits scooters, ATVs, dirt bikes, go-karts, you name it. The wiring is pretty straightforward: red goes to battery positive, green to battery negative, black is your ground wire, while yellow and pink handle the AC input from your magneto coil. It puts out about 55W max power and maintains a steady 12.5-13V when idling, then bumps up to 14-14.5V when charging your battery. Super important note - this thing HAS to work with a 12V battery, otherwise the voltage will spike way too high. It handles temperatures from -20°C to 60°C and comes with a free wire adapter cable to make installation easier. WOOSTAR stands behind their products too, offering solid customer support if you run into any issues. Just double-check your model before ordering to make sure it's the right fit for your ride!