WARNING: This page is about a different car, the 2018 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)