Alternator Lamp/Indicator: Testing and Inspection

1. If alternator indicator lamp does not light with ignition in On position and engine not running, check condition of indicator lamp bulb. If bulb is satisfactory, check for an open in circuit between ignition switch and regulator terminal (circuit 1).
2. If alternator indicator lamp does not light, disconnect electrical connector from regulator and connect a jumper wire between 1 terminal of regulator electrical connector and negative battery post cable clamp. With ignition turned to On position, indicator lamp should light.
3. If lamp does not light, check condition of indicator lamp bulb. If bulb is satisfactory, repair open in circuit between ignition switch and regulator or replace 500 ohm resistor (if equipped) across indicator lamp, as necessary.