By default, all AP2 S2000s will force you to run the AC compressor any time you direct the air flow to the windshield.  If you find this annoying this mod is for you.

This mod reprograms the AC controls so you can turn the AC compressor off if you want to. 

Preparation:
1) Turn the ignition switch on, but don't start the car.
2) Turn fan speed off.
3) Turn temperature knob all the way to the left (blue area).
4) Turn vent knob to all the way to the left (panel position).
5) Turn the ignition switch off.

Change the Programming:
1) Hold down both the air recirculation button and a/c button while turning the ignition switch on. Nothing lights up initially, keep waiting. After a few seconds the orange air recirculation indicator on the button will start flashing.
2) Continue holding both buttons until the orange air recirculation indicator stops flashing, then let go.

Operation:
When you first direct the air to the windshield the AC compressor will be turned on, but the system will now allow you to turn it off.  The controls will remember your last setting (AC on or off) even after you turn the ignition off.  But once you move the controls away from the windshield your last AC setting is forgotten.  The next time you direct the air to the windshield the AC compressor will be turned on again but you will still have manual control and can turn it off if you want.