Operation CHARM: Car repair manuals for everyone.

General

The Electronic Instrument Panel contains vacuum fluorescent displays for the speedometer, fuel gage, oil pressure gage, temperature gage and voltmeter. The Turn Lamps, Safety Belt Lamp, Malfunction Indicator lamp, BRAKE lamp and Headlamp High Beam Indicator use standard bulbs.

Ignition voltage to the cluster is supplied by the PNK/WHT (350) wire. This circuit supplies voltage to the vacuum fluorescent displays and provides voltage to the BRAKE and Malfunction Indicator lamp and the Voltmeter.

The other circuits to the cluster provide the various signals necessary to operate the displays and indicators.

When the Ignition Switch is turned to RUN, all of the segments of the vacuum fluorescent displays are lit up for about two seconds, after which the displays then show current readings.

The vacuum fluorescent displays can be switched between English and Metric by the E/M switch. When the E/M switch is open, the displays are in English. When the E/M switch is closed, the displays are in Metric. This signal is sent to the cluster through the LT BLU (811) wire. When the E/M switch is closed (Metric) the LT BLU (811) wire is connected to ground through the BLK (150) wire at the switch assembly.