Normal Operation
WARNING: This page is about a different car, the 2005 Lincoln LS. 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 7-PG24 (YE/BU) to the speed control switch which passes through the clockspring. The return signal is sent through circuit 31S-PG1 (BK/BU) and the clockspring.