What cause the AC compressor to kick in other than...

the dash switch of course? My compressor cycles reguarly even when the dash switch is completly off(fan and ac). I know that it is the AC compressor dragging down the idle cause Ill turn on the fan and the air will be cold. So I hit the ac button and the idle compensator kicks in with it and it idles fine. Is it some sort of switch on the compressor to keep it from freezing up, ECU controlled or what? I would like to know cause its basicly like Im driving around with my AC running all the time and my gas mileage has suffered.

TIA!

There is a switch under the drivers side headlight that you have to short out. Search for compressor switch, something should come up.