Alternator Indicator Lamp

DELCOTRON CHARGING SYSTEM

Fig. 1 Charge Indicator Lamp Wiring System. Delcotron Charging System:

Before performing diagnostic procedures, ensure system wiring is good, alternator belt is tight, and battery is fully charged.

1. Check drive belt for wear and proper adjustment.
2. With ignition switch On and engine Off, charging indicator lamp should be On.
3. If indicator lamp is not On, disconnect wiring harness at alternator. Ground ``L'' terminal using a fused five amp jumper wire. Refer to Fig. 1 for wiring schematic of alternator.
4. If lamp lights, replace alternator. If lamp does not light, check for a open between the grounding lead and the ignition switch. Reconnect wiring.
5. With switch On and engine running at a moderate RPM, lamp should be Off. If not stop engine, turn switch On, then disconnect wiring harness at alternator.
6. If lamp goes out, replace alternator.
7. If lamp stays On, check for a grounded ``L'' terminal wire in harness.