Re: Read 38 threads on console temp gauge, still need help
What Mike and I are suggesting, 200 ohms if sensor is at engine operating temperature, otherwise, a higher resistance value.
The temp sensor has a negative temperature coefficient, meaning when cold, center terminal to ground, using the meter as Mike describes, the sensor will read a high resistance, generally above 5000 ohms.
As the sensor heats up, resistance value lowers, typically, at operating temp of 180°F, 180 to 200 ohms. Just remember, higher temp, lower resistance, closer to HOT indication.
You can get a 100 to 400 ohm resistor, one resistor lead to ground, the other resistor lead to the green wire and see a scale indication. The resistor is a substitution for the sensor/sending unit.
BTW, a TEMP light sensor will not work for a gauge as the light sensor is a switch, HOT, switch is closed, to light the TEMP light.
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