Section 12-02: Heating and Defrosting | 1996 F-150, F-250, F-350, F-Super Duty and Bronco, F-Super Duty Motorhome Chassis Workshop Manual |
A heater blower motor switch resistor (18591) with a thermal limiter is mounted in the heater plenum chamber case (18A484). The heater blower motor switch resistor is used with the heater blower motor switch (18578) to obtain the desired fan speed.