DESCRIPTION AND OPERATION
4.10
DEFENDER 1999 MY
When the voltage applied by the alternator to the ignition/no charge warning
lamp equals that provided by fuse 7 of the passenger compartment fuse box
the warning lamp is extinguished. This shows the alternator is producing
battery charging current.
When the battery is at a low state of charge or the current draw from the
electrical functions of the vehicle causes a voltage drop, the alternator
automatically charges at its maximum rate (dependant on rotor speed) until 14
volts is achieved. When demand drops, the current output is reduced.
Battery charging is achieved on a brown wire from the alternator (C0183-1).
This feed passes across the starter motor (C0178-1 & C0631-1) and back to
the battery positive terminal (C0192-1) on a red wire.