F 350 2WD Super Duty V10-6.8L VIN S (1999)
Overdrive Switch: Description and Operation
The Transmission Control Switch (TCS) is a momentary contact switch that is located on the end of the transmission control selector lever. Pushing
the TCS will either disengage or engage the overdrive function of the transmission. If the OVERDRIVE is disengaged, the word OFF will illuminate
on the transmission control selector lever.