WARNING: This page is about a different car, the 2015 Ford Explorer. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Auxiliary Climate Control System Wiring Diagrams (1 Of 4)
Courtesy of FORD MOTOR COMPANY
Fig 2: Auxiliary Climate Control System Wiring Diagrams (2 Of 4)
Courtesy of FORD MOTOR COMPANY
Fig 3: Auxiliary Climate Control System Wiring Diagrams (3 Of 4)
Courtesy of FORD MOTOR COMPANY
Fig 4: Auxiliary Climate Control System Wiring Diagrams (4 Of 4)