Kia Optima: Circuit Diagram (1)

Installation
1.
Install the heater control module.
...
OFF mode
Press the OFF button to turn off the air climate control system. However you
can still operate the mode and air intake buttons as long as the ignition switch
is in the ON position. ...
To increase cruise control set speed
Follow either of these procedures:
Move the lever (1) up (to RES+) and hold it. Your vehicle will accelerate.
Release the lever at the speed you want.
Move the lever (1) up (to RES+) and re ...