WARNING: This page is about a different car, the 2015 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Audio System/Navigation - Without Touchscreen Wiring Diagram (1 of 8)
Courtesy of FORD MOTOR COMPANY
Fig 2: Audio System/Navigation - Without Touchscreen Wiring Diagram (2 of 8)
Courtesy of FORD MOTOR COMPANY
Fig 3: Audio System/Navigation - Without Touchscreen Wiring Diagram (3 of 8)
Courtesy of FORD MOTOR COMPANY
Fig 4: Audio System/Navigation - Without Touchscreen Wiring Diagram (4 of 8)
Courtesy of FORD MOTOR COMPANY
Fig 5: Audio System/Navigation - Without Touchscreen Wiring Diagram (5 of 8)
Courtesy of FORD MOTOR COMPANY
Fig 6: Audio System/Navigation - Without Touchscreen Wiring Diagram (6 of 8)
Courtesy of FORD MOTOR COMPANY
Fig 7: Audio System/Navigation - Without Touchscreen Wiring Diagram (7 of 8)
Courtesy of FORD MOTOR COMPANY
Fig 8: Audio System/Navigation - Without Touchscreen Wiring Diagram (8 of 8)