To replace the Blower Motor Resistor Assembly (C42), this electrical connector should be disconnected first. Then, undo the blower motor resistor mounting screws and pull out the blower motor resistor from the blower case. To install, take the blower motor resistor back into blower case be complied with the Fastener Notice on Service Precautions. Finally, install the blower motor resistor mounting screws and tighten them to 1.9 N.m (17 lb in). Finally, join the electrical connector.