WARNING: This page is about a different car, the 2005 Ford Pickup. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Identifying Parking Aid Module C2023 Connector Pinout
Courtesy of FORD MOTOR CO.
Fig 2: Identifying Parking Aid Speaker C2024 Connector Pinout
Courtesy of FORD MOTOR CO.
Fig 3: Identifying Parking Aid Switch C2035 Connector Pinout
Courtesy of FORD MOTOR CO.
Fig 4: Identifying LH Outer Parking Aid Sensor C4009, LH Inner Parking Aid Sensor C4010, RH Outer Parking Aid Sensor C4011, and RH Inner Parking Aid Sensor C4012