Instrument Panel Fuel Gauge Resistance Test

NOTE: The following test must be completed with instrument panel cluster removed. See appropriate R & I in this article. Measurements are all made with an ohmmeter. If resistance is extremely low, there may be a short in the coil. If resistance is extremely high, there may be a broken wire or similar problem in the gauge.

Measure resistance between terminals as specified in the table. See FUEL GAUGE RESISTANCE SPECIFICATIONS . If resistance readings do not conform to specifications, replace fuel gauge.

FUEL GAUGE RESISTANCE SPECIFICATIONS

Application

Terminals

Ohms

Colt, Colt 200, Summit ⁽¹⁾

A-B

77-93

A-C

59-71

B-C

76-92

Colt Vista ⁽²⁾

A-B

99-121

B-C

149-182

C-A

50-61

Colt Wagon ⁽³⁾

1-2

50-60

2-3

149-181

1-3

99-121

Ram-50 ⁽⁴⁾

IG-ground

62-78

7V-FU

49-61

⁽¹⁾	See Fig 1 or Fig 2 for terminal location.

⁽²⁾	See Fig 3 for terminal location.

⁽³⁾	See Fig 4 for terminal location.

⁽⁴⁾	See Fig 5 for terminal location.

Fig 1: Fuel Gauge Resistance Check Terminal ID (Colt, Colt 200 & Summit W/Tachometer)

Courtesy of CHRYSLER MOTORS.

Fig 2: Fuel Gauge Resistance Check Terminal ID (Colt, Colt 200 & Summit W/O Tachometer)

Courtesy of CHRYSLER MOTORS.

Fig 3: Fuel Gauge Resistance Check Terminal ID (Colt Vista)

Courtesy of CHRYSLER MOTORS.

Fig 4: Fuel Gauge Resistance Check Terminal ID (Colt Wagon)

Courtesy of CHRYSLER MOTORS.

Fig 5: Fuel Gauge Resistance Check Terminal ID (Ram-50)

Courtesy of CHRYSLER MOTORS.