ITEM NAME:4 Wire 2 Phase Motorcycle Regulator Rectifier Black 12VDC Bike Scooter Description: 4 Pin Voltage Regulator Rectifier commonly used in motorcycle , boat motors and DIY engines etc. Cable Wire: Red to Battery +; Green to Battery - or Ground; Yellow and Pink AC input, connect to the rotor, magento stator, generator. Made of iron and suitable for a variety of harsh working.1 Piece 4 Wire Full Wave Regulator Rectifier. Cable Wire: Red to Battery +; Green to Battery - or Ground; Yellow and Pink AC input, connect to the rotor, magento stator, generator. The power module has over current protection, short circuit protection, and overheat protection.