TM-9-2320-387-10 HMMWV Operator Manual Download
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TM 9-2320-387- 10 0 A BATTERY GAUGE - Indicates electrical system voltage. It is connected to the electrical system through circuit 567. 0 B ALTERNATOR (200~AMPERE) - Is a dual volt, rated at 14/28 volts, 200 amperes, with external regulator. The alternator assists and recharges vehicle batteries during operation. 0 C PROTECTIVE CONTROL BOX - Protects vehicle electrical system in the event battery polarity is reversed. Provides load dump, glow plug operation, and interfacing of engine and body harnesses. 0 D CIRCUIT 2 - Sends AC signal, indicating alternator shaft rpm, to frequency switch in protective control box to prevent operation of starter solenoid when engine is running. 0 E POSITIVE CABLE 6 - Provides 2%volt alternator output to maintain charge across two batteries. 0 F POSITIVE CABLE 68A - Provides 14volt alternator output to maintain charge across the lower battery. 0 G GROUND STRAP - Connects negative stud on alternator with engine ground strap to provide a ground circuit to alternator. l-21