TM 10-3930-664-10 1-18. ELECTRICAL SYSTEM BATTERIES.    Two  12  volt  batteries  are  connected  in  series  to  provide  24  volts  DC  to  provide  starting  power  and  to operate lights, gauges, and other electrical components. ALTERNATOR.  The 24 volt, 45 amp alternator is an integral part of the charging circuit and provides current to charge the batteries when the engine is running.  It is operated by the engine drive belt. STARTER MOTOR.  The starter motor is part of the starting circuit and turns the engine flywheel fast enough to start the engine.  It operates only when the ignition switch is turned to the right to the start position. CIRCUIT BREAKERS.  Located inside the instrument panel on the left side.  Circuit breakers open the battery circuit, if there Is a short, grounded wire, or excessive current draw by a defective component in the corresponding circuit.  When the  circuit  is  open,  current  will  not  flow  through  the  electrical  system.    The  circuit  breakers  will  automatically  reset  once they cool.  If a breaker continually trips, the electrical system requires repair. 1-11