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Home >> Ford >> 1987 >> Thunderbird Base, 5.0 F >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Heater System >> Operation >> Control Levers

Control Levers

The heater and power ventilation control utilizes a mode control lever for various modes that determine the manner in which the system will operate. A temperature control lever is used for manually setting the desired temperature and a blower switch controls the volume of air movement.

Each position of the mode control lever and blower switch is detented for positive engagement. The blower switch provides manually selected blower speeds and may be operated in any position to select the desired amount of air flow.