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It is a resistor that changes resistance based on temperature 0 volts is cold 13 volts pins the gauge. The difference between the one wire and the three wire is the three wire is not Dependant on battery voltage. the old ones will read colder at 11 volts than at 13 volts
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Where is the temperature heat sensor on a 454 Chevy motor?
Were is the temperature heat sensoe on a 454 chevy motor.
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