Blower Motor Resistor Diagram. They control the hvac circuit with a switch. And a diagram of the components inside the blower motor resistor assembly here are a few pictures of a burned resistor wiring pigtail from a 1998 police interceptor.
Check for full airflow at the vents. Otherwise the structure won t work as it should be. The blower resistor is connected in series with the blower fan.
2003 chevy silverado blower motor resistor wiring diagram source.
Blower motor resistor has repeat failures. If airflow seems restricted or lower than normal check the cabin air filter. The blower resistor is connected in series with the blower fan. The interior fan is powered through two separate fuses and a blower motor relay.
