Dodge 2008 Dakota - Manual (Page 134)

Blower Control
The rotary knob at the left of the control panel is the
blower control. Turn the knob clockwise to one of the
four positions to obtain the blower speed you desire.
Temperature Control
The rotary knob at the center of the control panel controls
the temperature of the interior air. You can choose your
degree of comfort by rotating the knob. The coldest
temperature setting is to the extreme left (blue region)
and the warmest setting is to the extreme right (red
region) of the rotation.
Air Conditioning
134 INSTRUMENT PANEL AND CONTROLS