WARNING: This page is about a different car, the 2015 Ford Fiesta. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Audio System / Navigation Wiring Diagram (1 Of 10)
Courtesy of FORD MOTOR COMPANY
Fig 2: Audio System / Navigation Wiring Diagram (2 Of 10)
Courtesy of FORD MOTOR COMPANY
Fig 3: Audio System / Navigation Wiring Diagram (3 Of 10)
Courtesy of FORD MOTOR COMPANY
Fig 4: Audio System / Navigation Wiring Diagram (4 Of 10)
Courtesy of FORD MOTOR COMPANY
Fig 5: Audio System / Navigation Wiring Diagram (5 Of 10)
Courtesy of FORD MOTOR COMPANY
Fig 6: Audio System / Navigation Wiring Diagram (6 Of 10)
Courtesy of FORD MOTOR COMPANY
Fig 7: Audio System / Navigation Wiring Diagram (7 Of 10)
Courtesy of FORD MOTOR COMPANY
Fig 8: Audio System / Navigation Wiring Diagram (8 Of 10)
Courtesy of FORD MOTOR COMPANY
Fig 9: Audio System / Navigation Wiring Diagram (9 Of 10)
Courtesy of FORD MOTOR COMPANY
Fig 10: Audio System / Navigation Wiring Diagram (10 Of 10)