Alternator Test
- Turn ignition off and disconnect negative battery cable. Remove output lead from alternator terminal "B". See Fig 1. Install a 100-amp ammeter in series to "B" terminal and disconnected output lead. Install ammeter positive lead to "B" terminal and negative lead to disconnected output wire.
- Install a digital voltmeter between alternator "B" terminal and battery positive terminal. Install voltmeter positive lead to "B" terminal and negative lead to positive terminal. Reconnect negative battery cable.
- Start engine. Turn accessories on until ammeter indicates 20 amps. If voltmeter indicates .2 volt, system is okay. If voltage is greater than .2 volt, wiring is defective between alternator "B" terminal, fusible link and battery positive terminal.
Courtesy of CHRYSLER MOTORS.