Charging System: Description and Operation

The alternator generates an AC voltage in its windings as it is belt-driven by the engine. The rectifier converts this AC voltage to DC.

The voltage regulator, a component which is included in the alternator frame, has a primary function of controlling the alternator ' s output to meet electrical system requirements. This regulator controls the charge warning light.

Fuse 7 supplies battery voltage to the charge warning indicator light. With the engine not running and the ignition switch in ON, terminal L of the regulator is grounded internally and provides ground for the charge indicator light and the indicator lights up. With the engine running and the alternator charging, terminal L voltage rises and the indicator goes out. If the alternator fails to charge, terminal L grounds internally and provides ground for the charge indicator light and the indicator lights up.