Feature: Easy to install, no installation instruction included Prevent over-charging and improve charging capability With heat sink fins for better cooling Made from high quality aluminium material, very High reliability aftermarket regulator rectifier to replace your old or broken . Wiring: Pink and Yellow Wires = AC input to the rotor/magento stator/generator Green Wire = Ground Red Wire = DC + output, power to the accessories/battery Fitment: Suitable for most motorcycles with a carburettor based fuel Also suitable for classic bike conversions with a 2-phase stator coil Package Included: 1 x Voltage Regulator