Climate control panel off, but a/c compressor is kicking on.

[92470]

My truck (1987 V10) was idling today and I noticed I could hear the a/c compressor kicking on and off. My climate control panel lever was in the "off" position, and the fan lever was in the "low" position. Temperature lever was all the way to right to heat. Anyone have any idea why my a/c compressor would be kicking on and off when I had nothing on? I know it operates with the a/c on, and also defrost, but my panel was off. It was working also because I felt the lines and they were ice cold. I just unplugged it at the compressor until I could figure out what the problem was, but any suggestions? Thanks for any help!

This new problem is on the heels of my no high beam problem I am trying to solve as well. I swear sometimes I wonder why I just don't buy a new truck and end the constant frustration of a new problem every week with this one.