Ford 1996 Thunderbird Manual page 79

To cool your vehicle using outside air, turn the
SELECT knob to A/C, turn the TEMP knob all
the way to the end of the blue range (full left)
and turn the FAN knob to the desired speed
between LO and HI. A/C provides quieter
system operation than MAX A/C, but it is not
as efficient as MAX A/C which uses recirculated
air.
To ventilate your car with outside air, during
mild weather, turn the SELECT knob to PANEL,
turn the TEMP knob for the temperature desired
and set the FAN knob to the speed desired.
Under normal conditions, the SELECT knob
should be left in any position other than MAX
A/C or OFF when the vehicle is parked. This
allows the vehicle to "breathe" through the
outside air inlet duct.
To cool your vehicle quickly in warm weather,
turn the SELECT knob to MAX A/C, turn the
TEMP knob all the way to the end of the blue
range (full left) and turn the FAN knob to HI.
MAX A/C uses recirculated air and is the most
fuel efficient way to cool your vehicle and can
also be used in heavy traffic to prevent exhaust
fumes from entering the vehicle. MAX A/C can
also be used in high humidity areas for more
efficient operation.
If the interior of your vehicle is very warm,
drive for the first few minutes with the windows
open. This forces most of the hot, stale air out of
the vehicle and allows the air conditioning to
work faster.
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