94 Sunbird 2.0- how do I disconnect the lockup switch

Basically, my issue in a nutshell is that after driving my car for about 15 minutes or so, it stalls. The stalling only occurs when I am in gear and apply the break to reduce my speed to idle or 0 (for instants, a red light or stop sign). I have read other forums where other people are having identical problems with their sunbirds that mentioned to disconnect the torque converter lock-up switch which should be connected to the solenoid. It was mentioned that this could lower fuel economy, however the car would not stall-which at this point is the most important thing. The problem with that is, I have looked under my car over a hundred times in the last week trying to figure out where that switch is, but it seems hopeless for a guy like me. I look under there and I can only identify a handfull of things. So if someone who speaks lehmans terms could please direct me to this switch, it would be incredibly appreciated. I am stuck between a rock and a hard place!