Gauge Cluster - Will Not Charge at Idle

Number 86-8-11A Date 3/86

Subject: 1986 SUNBIRD WITH U14 GAUGE CLUSTER WILL NOT CHARGE AT IDLE

WITH U14 GAUGE CLUSTER BEFORE V.I.N. #G7 522339

ENGINE WIRE HARNESS:

CONDITION:

1986 Pontiac Sunbird with U14 gauge cluster (gauges without tachometer) will not charge the battery at idle. The generator will self-charge when the engine RPM exceeds approximately 2500, and will remain charging until the ignition is turned off.

CAUSE:

I.P harness is missing the wire to turn on the generator.

CORRECTION:

Add a wire in the engine wire harness to turn on the generator using the procedure below:

1. Disconnect negative battery cable.

2. In the engine wire harness, locate the dark brown wire and the dark brown with double white stripe wire (see Figure 1).. Cut both wires about 5 inches (250 mm) from the bulkhead connector.

PRECUT RESISTANCE WIRE:

3. Add five feet of resistance wire as shown in Figure 2. The precut resistance wire is available from WDDGM as P/N 12058447. Connectors should be soldered, and sealed with 3/16" shrink tubing.

4. Reconnect negative battery cable.

5. Start engine and check that generator is charging at normal idle speed (approximately 14 to 15 volts).

6. Fold excess resistance wire into conduit and replace conduit into original position.

Labor Operation Number: T3144
Labor Time : .4 hours