99 outback air conditioner is always on. The switch is not on and the light is not on. I can watch the a/c clutch enage and disengage when it is running. Any ideas?

Is the vent control set to Defrost? The A/C always runs when it is on defrost, regardless of the A/C switch. Most cars do that.

 

If it's not on defrost, then it's time to get out the volt/ohm meter and wiring diagram. Something is shorted or stuck (switch, relay).

i usually leave it on defrost

didn't realize the a/c always ran on defrost.

thanks.