Generators & Regulators: Description: Notes

The alternator provides DC voltage to operate the vehicle's electrical system and to keep the battery charged. The voltage output is controlled by the IC regulator. Power is supplied at all times to alternator terminal No. 2 "S" through a 120-amp fusible link (letter "A", located in the fuse and fusible link box), and 7.5-amp fuse (No. 65 located in the fuse and fusible link box).

Terminal "B" supplies power to charge the battery and operate the vehicle's electrical system. Output voltage is controlled by the IC regulator at terminal No. 2 "S" detecting the input voltage. The charging circuit is protected by the 120-amp fusible link.

Terminal "E" of the generator supplies ground through body ground "E101".

With the ignition switch in the ON or START position, power is supplied to 10-amp fuse, No. 8 located in the fuse block (J/B No. 1), to combination meter terminal No. 66 for the charge warning lamp.

Ground is supplied to terminal No. 68 of the combination meter through terminal No. 1 "L" of the alternator. With power and ground supplied, the charge warning lamp will illuminate. When the alternator is providing sufficient voltage with the engine running, the ground is opened and the charge warning lamp will go off. If the charge warning lamp illuminates with the engine running, a fault is indicated.