External Regulator Models

NOTE: This test applies only to models equipped with a charge indicator lamp.


1. If the charge indicator lamp does not come on with the ignition switch in the run position (engine not running), check the I circuit (ignition switch to regulator I terminal) for an open circuit or burned out charge indicator lamp.

Jumper Wire:

2. If the charge indicator lamp does not come on, disconnect the wiring plug connector from the regulator.
3. Connect a jumper wire from the I terminal of the regulator wiring plug to the negative battery post cable clamp.
4. The charge indicator lamp should go on with the ignition key turned to the run position (engine not running).
5. If the indicator lamp does light, remove jumper wire.
6. Connect voltmeter negative lead to battery negative post and connect voltmeter positive lead to connector A terminal. Battery voltage should be indicated.
7. If battery voltage is not indicated, service the A circuit wiring.
8. If the charge indicator lamp does not go on, check the bulb for continuity and replace if necessary.
9. If the bulb is not burned out, an open circuit exists between the ignition switch and the regulator. Check the 500 ohm resistor across the indicator lamp.