What is a regulator/rectifier?
This part of your electrical system performs two functions; firstly, the rectifier converts the alternating current (AC) produced by your stator/alternator and turns it into direct current (DC) that is usable by your bike’s battery charging system and other 12V components. Secondly, the regulator manages the voltage produced by the stator to ensure that it is not too much or too little – too much and you might damage electrical components or overcharge your battery, too little and you will not charge your battery.
The above reg/rec is from a CX650ED; a closer look at the wiring:
The three yellow wires you see there (two are obvious, third behind) connect to the three yellow wires coming from your stator.
If you hold the reg/rec just so you can make out some information in the label more easily:
A part number is easier to see:
