Pinpoint Test D: The Steering Wheel Control Illumination Is Inoperative: Notes
WARNING: This page is about a different car, the 2011 Mercury Milan, 2011 Lincoln MKZ, and 2011 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.
Refer to SYSTEM WIRING DIAGRAMS article, Cluster and Panel Illumination for schematic and connector information.