Blower Motor Resistor

All type of Blower Motor Resistor. / Resistencia

The heater blower motor reduces or increases the amount of air blowing through the dashboard vents based on the fan speed selected or, in an automatic climate control system, the interior temperature and other factors. But resistors, small electronic parts tucked out of sight, are what actually control the fan speed by reducing the amount of electrical current going to the blower motor.