I was actually wondering the same thing, as I was pulling apart my dash the other day, and I noticed the TC wiring was in place behind the dummy switch. I don't know if it's connected to anything at the other end, but it's there!

1999 Red / Tan SVT #1969 of 2760 Built 4/21/99 K&N, DMD, FMS Wires, ES Insert / Bushings, PF End Links 17" FSVT 5-Spokes Factory Spoiler 35% Tint All Around