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The resistor in the heating/air conditioning system controls the blower speed. As the fan speed switch is turned, the resistor adjusts the amount of current to the blower motor, changing the fan speed.

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โˆ™ 2015-03-06 00:03:40
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Q: What does a car resistor do for the heating system what could cause it to malfunction and does the light system have anything to do with its connection thanks?
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