Features: Fits 12V battery, bulb, light, and other compatible components. Compatible with GY6 125cc and 150cc engines, 4-wire, 4-pin connector. Wiring configuration: Red to battery positive (+), Green to battery negative (-), Yellow and Pink for AC input connected to magneto coil. Note: This regulator rectifier must be used with a 12V battery. Operation without a 12V battery may result in elevated output voltage. Specifications: Color: Black Size: As shown in picture Cable length: 100 cm Voltage: Designed for 12V battery systems AC Input Voltage: 2060 V Unloaded Output Voltage (Idling): 12.513 V 0.5 V Charging Output Current: 04 A Battery Charging Voltage: 1414.5 V 0.5 V Working Temperature: -20C to 60C Wiring Instructions: Red wire to positive output (battery +) Green wire to ground (negative/) Yellow and Pink wires to AC input (connect to magneto coil) Packing List: 1 x Voltage Regulator