CJ Gauge Specification Chart

Oil Pressure gauges

Used from 1984 to 1986

I to GRD= 400 Ohms
I to S = 81 Ohms
GRD to S = 330 Ohms

Wires:
I=Red
S=Purple
GRD=Mount
2" Depth

0 PSI = 234-246 ohms
20 PSI = 149-157 ohms
40 PSI = 100-105.5 ohms
60 PSI = 65-69 ohms
80 PSI = 32.5-34.5 ohms


 

Used from 1974 to 1982

I to GRD= 7.5 meg Ohms
I to S = 73 Ohms
GRD to S = 7 meg Ohms

Wires:
I=Red
S=Purple
GRD=Mount
1" Depth

1976 to 1986

0 PSI = 68-78 ohms
40 PSI = 21-25 ohms
80 PSI = 7-13 ohms


 

Oil Pressure Sender

1984 to 1986    2" deep Gauge
0 PSI = 234-246 ohms
20 PSI = 149-157 ohms
40 PSI = 100-105.5 ohms
60 PSI = 65-69 ohms
80 PSI = 32.5-34.5 ohms

 

1974 to 1982 1" deep Gauge

0 PSI = 68-78 ohms
40 PSI = 21-25 ohms
80 PSI = 7-13 ohms
 

Volt Meters

Used 1976 to 1986 1" Deep

15 meg ohms GRD to +

Wires:
+=Yellow
GRD=Black
Used 1976 to 1980 2" deep

225 Ohms GRD to +

Wires:
+=Yellow
GRD=Black

Fuel Gauges

OEM Fuel Gauge

GRD to S = 71 ohms
GRD to I = 51 ohms
GRD to A = 51 ohms
S to I = 21 ohms
S to A = 21 ohms
I to A =0 ohms
After market Fuel Gauge

Resistance shows slight variations from above.

S = Pink
I = Red
A=Metal Strap to Temp

Fuel Level Sending unit

  Empty = 73 ohms
1/2 Tank = 23 ohms
Full tank = 10 ohms

 

 

Temperature Gauge

OEM Gauge

Wire Colors:

"S" = Purple
"A" = Strap to Fuel
Resistance Test:

7
3 ohms Cold - Test when engine is slightly warm. A stone cold engine will read 400 ohms

36 ohms Beginning of Band
13 ohms End of Band
9 ohms Hot

Resistance across terminals= 21 ohms

Replacement Gauge

Wire Colors:

"S" = Purple
"A" = Strap to Fuel
Resistance Test:

7
3 ohms Cold - Test when engine is slightly warm. A stone cold engine will read 400 ohms

36 ohms Beginning of Band
13 ohms End of Band
9 ohms Hot

Resistance across terminals= 21 ohms

Temperature Sender Unit

Temp *F Ohms
70 = 413
100= 246
150= 92
180= 56
190= 49
200= 43
210= 36

 

 

Speedometer:

shaft speed ------ MPH
167 ------------9 to 11
500 -----------30 to 32.5
1000 -----------60 to 63
1500 -----------90 to 94
1=High Beams; Color:Grey/T
2=Illumination; Color:Orange
3=R-Turn Signal; Color:Green
4=L-Turn Signal;Color:Green/T
5=Brake Warn;Color:Red,Black
6=4WD Light;Color:Red,Orange
 

For more detailed information on CJ Gauges, go here for INFORMATION

For information on testing CJ Gauges, go here for TESTING

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