Black or 4 Wire, 2 phase full wave rectifier and 12V regulator. Suitable for motorbikes, scooters and quads and even complete classic bike conversions. Works with kick or electric engines. If you've only got a kick you can even remove your battery and run your electrics solely from this combined unit. Motorcycle regulator rectifiers convert the fluctuating alternator current into 12Volts DC. Allowing you to run your electrics and charge your battery, all in one unit! Replace your old unit or even convert an old two-part system. With just 4 wires, you can finally simplify your bikes electrics. Suitable for any motorcycle with two live output wires from the alternator. The integrated full wave rectifier on each AC input makes this unit ideal for two phase systems and even single phase systems! Simply connect your two coil wires then connect your battery, and you're done! Wiring your bikes charging circuit has never been so easy! The heat sink on these units is electrically isolated from the internal circuitry, making this 4 Wire regulator rectifier also ideal for positive earth set ups. Some manufacturers have adopted variations of standard wiring colors from the classic motorcycles of the 1970's. Here's a quick basic breakdown of the commonly used wire colors and what they mean. Of course not all manufacturers use the same wire colors, especially in their wiring looms. So it's always best to check your bikes wiring manual or consult with your local auto-electrician before beginning installation. However, the majority of aftermarket wired regulator rectifiers use these wire colors. **2 Phase 4 Wire Full Wave Regulator Rectifier Specifications** Type: 12V DC 4 wire Regulator Rectifier No. of AC Input Phases: 2 Rectification: Full Wave Connector Type: 4 way 6.3mm Max watt - 110 watt Charging output current 0-4A **4 Wire Full Wave Regulator Rectifier is Suitable for Motorcycles with a carburetor based system. Also suitable for classic bike conversions with a 2-phase stator coil. Today motorcycle regulator rectifiers are considered plug & play devices, but they are not all the same. When it comes to wiring it's essential you know what each of the fitted pins or wires are for before you connect anything! Otherwise you can damage your new part before you even get started, so please continue reading to avoid issues...** **Wire Colors & Connections:** Yellow, White or similar = AC Inputs (from the stator to the regulator rectifier) Red = V+ (from the regulator rectifier to the positive battery terminal via a fuse) Green = V- (from the regulator rectifier to the negative battery terminal) Color: black Material: Plastic + metal Size: Overall Length: 68mm Overall Width: 58mm Overall Height: 23mm Cable Length: 170mm (approx) Distance Between mounting Holes: 51-55mm Mounting Hole Diameter: 6x8mm **Package Contents:** 1x 4 Wire Regulator Rectifier Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item to appear slightly different from the real thing. The measurement allowed error is +/- 1-3cm.