Transmission Control Switch Connector End View (C279)

Fig 1: Identifying Transmission Control Switch Connector (C279)

Courtesy of FORD MOTOR CO.

Pin	Circuit	Circuit function
1	19 (LB/RD)	Instrument illumination, feed
2	1205 (BK)	Ground
3	911 (WH/LG)	Voltage supplied in Start and Run (overload protected)
4	224 (TN/WH)	PCM, to transmission overdrive cancel switch