regulator / rectifier -101 OCTANE-

The rectifier/regulator changes the AC voltage generated in the alternator to the DC voltage of 12V used in the vehicle electrical system and keeps the voltage within a certain tolerance range. This charges the battery and ensures, for example, that incandescent lamps do not burn out.

Since this component is exposed to very high temperature loads, it not infrequently breaks down.
If the rectifier/regulator is defective, the battery is constantly empty, in certain ignition systems the ignition system no longer works, incandescent lamps burn out continuously or the driving lights flicker._{AI-translation}