Monday, November 17, 2014
How to Wire a Blower Motor Resistor
Most vehicles today have multiple fan speeds for the heat and A/C. These speeds are controlled by a blower motor resistor. The blower motor resistor is a small electrical device that controls the voltage to the fan motor. If the resistor becomes defective, you may only have one working speed on your fan control. If this problem occurs, the blower motor resistor will need to be replaced. It s a fairly inexpensive part and is available at most car part stores.
Instructions
- 1
Locate the heater blower resistor in your vehicle. It is typically mounted under the dash near the blower motor. You may need to check your vehicles repair guide, or your car dealership to help determine the resistors location. Parts of the dash may need to be removed depending on resistor location.
2Remove the wire connector from the blower motor resistor by lifting the tab on the connector and gently pulling the connector off the resistor. This may require working the connector back and forth a few times to free it from the resistor.
3Remove the two screws holding the resistor in place. These may be screws or small bolts depending on your vehicle. The resistor should now be able to be removed.
4Position the new resistor in place, and secure it with the two screws. Reconnect the wire connector by firmly pressing it onto the resistor. Replace and dash parts that were previously removed.
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