[Grim Reaper]

The compressor runs in heat, vent and all the way to the left?
Now the blower will run reguardless of the selection anytime the key is on if it's a AC model. That's normal.

I would have to look at the diagram to be sure but I think that the compressor is tied into the big relay on the box on the passengerside. I think it's green with black stripe. The dohicky on the freon line with two wires is the same circuit so trace that back and see if it goes into that relay.