Funton,

1955 GMC 8 Cylinder pickups used a 30ohm wirewound resistor mounted on the back of the gauge to drop 12v to 6v for the gauge.

The information listed in the parts book is:

7.5120 Unit, Resistance
1516846 10-50 all, 65 all
incl. bracket*Fuel & Temp Gauge*12 Volt

Six cylinder GMC pickups that year were still 6 volt.

5watt 30ohm wirewound

Last edited by OlBlue; 05/11/2010 1:03 AM.
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