Normal Operation
WARNING: This page is about a different car, the 2006 Mercury Montego, 2006 Ford Freestyle, and 2006 Ford Five Hundred. However, it is still accessible from the selected car via links, so may be relevant.
The powertrain control module (PCM) sends a signal through circuit 848 (DG/OG) to the speed control switches which passes through the clockspring. The return signal is sent through circuit 151 (LB/BK) and the clockspring.