Current Test

Ensure battery voltage is at least 12 volts. Disconnect terminal D+ (Blue wire) from generator. Connect digital ammeter between terminal D+ (Blue wire) of generator and Blue wire. Set digital ammeter to 200-mA range. Turn ignition on. If amperage is not 150-185 mA (milliamps), check Blue wire between generator and instrument panel 32-pin harness connector "A" for an open or short to ground. If Blue wire is okay, check instrument cluster printed circuit.