CG125 motorcycle silicon rectifier regulator, interface (light green plug), circuit parameters and CG125 power supply system fully match, directly replace the original silicon rectifier, no need to modify the circuit; The alternating current output of the generator is converted into direct current, and the voltage is stabilized at about 12V to ensure the stable power supply of battery charging and electrical equipment; The shell is equipped with heat dissipation fins, which can quickly dissipate the working heat, avoid the performance attenuation caused by high temperature, and adapt to the working condition of long time riding; Stable voltage output can avoid excessive voltage damage to lights, instruments and other electrical components, and extend the service life of vehicle electrical appliances.