Locate Ford Mustang Blower Motor Resistors & Ford Mustang Blower Motor Resistor Location. Discover Ford Mustang Blower Motor Resistor Replacement. Maintaining the blower motor resistor in your Ford Mustang is crucial for a comfortable cabin experience, as it controls the fan speeds of the vehicle's heating and air conditioning system. Signs that may indicate the need for a replacement include a fan that only works on high speed or not at all. To extend its lifespan, ensure that the cabin air filter is replaced regularly to prevent debris from clogging the system. When shopping for a new resistor, look for options compatible with your Mustang model year, paying close attention to material quality that can withstand temperature variations. During installation, secure connections tightly to avoid potential electrical issues, enhancing the product's durability and ensuring optimal performance.