ITEM NAME:12V DC 4 Pins Voltage Regulator Rectifier fit for Bike Moped Scooter Black fhj Descriptio n Description:.Rectifier scooter. Plug: 4 Wires with 4 Pins. Easy to install with 4 wires and 4 pins, just plug and play. We'd like to settle any problem in a friendly manner. We want to make sure you are happy with our item.