computer on 1992 bonneville se

Where is the computer located at. And is there a ground wire from the computer that makes the AC kick on? Need some help,thanks.

The ECM is above the passenger's hush panel to the left of the relay center.

http://img.photobucket.com/albums/v155/randman1/1993SSEi/DSC00914_edit.jpg

There is an AC request input from the HVAC programmer to the ECM. The ECM then sends a grounded output to the compressor clutch relay. Need more info on your exact problem.