Mystery switch

[Doug Musick]

My 94 has the docking light switch in that part of the dash along with the fast idle, but you've already ruled out the fast idle.

[Fulltiming]

Mine has a Remco transmission pump control switch with a light to indicate it is properly connected and functional. If the car is not attached to the unit, it screams at me for about 15 seconds before it shuts off the alarm.