For reference, both of the switches mounted on the DA6/HR6 compressor (as used on your V6) are high-pressure
switches. The first switch is normally open, and it closes to turn on the radiator fan when the high-side pressure goes too high. The second switch is normally closed, and it opens to disengage the compressor clutch when the pressure goes even higher. The only low-pressure switch in a DA6/HR6 system is mounted in front, on the accumulator.
[This message has been edited by Marvin McInnis (edited 09-07-2013).]