Normal Operation - Except STX
WARNING: This page is about a different car, the 2007 Ford Ranger. However, it is still accessible from the selected car via links, so may be relevant.
When the brake pedal is applied, the voltage is routed to the high mounted stoplamp and the multifunction switch through circuit CCB08 (VT/WH). The multifunction switch then routes the voltage to the LH and RH rear lamps through circuits CLS35 (VT) and CLS36 (YE), respectively.