Found in the “Workshop Information System” (aka “WIS”) while reading up on the MY2011 9-5:
Rear Vision Camera System Operation
The components used in the rear vision camera system are the camera, located at the rear of the vehicle, and the navigation radio.
When the vehicle is placed in REVERSE, the body control module sends a 12 V signal to the rearview camera. This signal indicates that rear vision camera operation is required. Upon receipt of this signal, the camera will begin the power up cycle. The navigation radio also receives a serial message that indicates that reverse gear is engaged. When the radio receives the message it initiates the display start cycle. The rear vision camera transmits the video signal to the navigation radio through discrete + and – signal circuits. A metallic foil encases the video signal circuits and is tied to a shield ground circuit. This shield is designed to reduce electronic interference which may degrade the video signal and cause a distorted or otherwise degraded image.
If desired, the rear vision camera can be manually disabled through the navigation system menu. Refer to the navigation system owners manual for instructions on manually disabling and enabling the rear vision camera system.
Connector Part Information
- Harness Type: Rearview Camera
- OEM Connector: 0-1924211-1
- Service Connector: Service by Harness – See Part Catalog
- Description: 6-Way F 0.64 Series Sealed (NA)
Terminal Part Information
- Terminal/Tray: SAIT-A03T-M064/14
- Core/Insulation Crimp: P/P
- Release Tool/Test Probe: J-38125-215A/J-35616-64B (L-BU)
Pin Wire Color Circuit No. Operation 1 0.5 GY/YE 6972 Camera Signal #2 + 2 0.5 BARE 6974 Camera Drain Wire 3 0.5 BN/WH 24 Backup Lamp Supply Voltage 4 0.5 WH/BU 6973 Camera Signal #2 5 0.5 BK/WH 2351 Signal Ground 6 0.5 RD/GY 2840 Battery Positive Voltage
So, there is a plug, and the pinout looks simple enough. The only questions remaining are: Can this plug be plugged in anywhere useful on our 9-5s, and is the software in the MY11 9-5s ready for this?
Most likely this feature was not ready in time for MY11 and can only be found on MY12 9-5 (SC only?) as well as the formidable 9-4X.
Someone out there is bound to know. Feel free to leave a comment below.