External Voltage Regulator (EVR) System

Fig. 4 Indicator Lamp Test. External Voltage Regulator (EVR):

1. If charge indicator lamp does not come with the ignition key in the run position and engine not running, check the I wiring circuit (ignition switch to regulator I terminal) for open circuit or burned out charge indicator lamp.
2. If charge indicator lamp does not come on, disconnect electrical connector from regulator and connect a jumper wire, Fig. 4, from the I terminal of the regulator wiring plug to negative battery post cable clamp.
3. Charge indicator lamp should go on with ignition key turned to RUN position.
4. If charge indicator lamp does not go on, check for presence of bulb socket resistor. If resistor is missing, replace bulb socket. If resistor is present, check for contact of bulb socket leads to the flexible printed circuit. If satisfactory, check indicator bulb for continuity and replace if burned out.
5. If bulb and socket are satisfactory and socket leads are in contact with the flexible circuit, open circuit exists between ignition switch and regulator.
6. Check 500 ohm resistor across indicator lamp.