Hey Everyone,
After following the thread at http://www.cadillacforums.com/forum...ussion/218361-cadillac-cts-2011-nav-disc.html, it's quite evident that the latest NAV software update contains the provisions for the rear-view camera.
I have not performed this mod (and don't even know if it'll work), but I thought I'd pass on some information I looked up that might help someone else find a solution.
I'm 99% sure the Nav hardware unit (AKA the GM Silverbox... you can see here: http://www.sandyblogs.com/techlink/2008/02/integrated-center-stack-ics.html) is identical for 2008-2011 CTSs. That leads me to believe that the inputs existed, but were never used.
I looked up the pin-outs in the Service guide for both the 2011 and 2008 CTS.
There is a 20-pin gray connector that attaches to the back of the nav unit. This connector has provides various audio and voice inputs to the nav system.
Pins 5 and 15 provide signals from the rear-view camera to the system (Circuit 6972 and 6973).
In the 2008, I checked Pins 5 and 15, and noticed something interesting. These pins are not listed as NOT USED (such as Pin 12), but rather as COAX, as well as wiring colour. This leads me to believe that these two circuits are undocumented, but exist (In the pin-out list, there are other COAX connections that lead to other components in the car, such as the USB input and Nav display).
The big question is: Is there wiring already place that terminates to these pins, or would new wiring need to be installed?
I also checked the pin-outs of the camera. The 2 camera circuits (6972 and 6973) directly terminate to the camera. This tells me that there are no other components to the camera and the camera is simply providing an analog video source to the to the nav system.
Something to note is that along with the ground/drain wires, there are 2 other circuits that would have to be tapped: The Backup Lamps Supply Voltage (most likely to indicate when to turn the camera on), and the Ignition Voltage (so the camera is only powered when the vehicle is on).
So this leads me to a couple questions to anyone wants to look into this:
Does the wiring harness in 2008-2010 vehicles already include the 2 wires for the rear-view camera?
Are the other circuits the camera requires, already available in the rear of the car?
Hopefully this may help someone eventually install a camera in their car.
After following the thread at http://www.cadillacforums.com/forum...ussion/218361-cadillac-cts-2011-nav-disc.html, it's quite evident that the latest NAV software update contains the provisions for the rear-view camera.
I have not performed this mod (and don't even know if it'll work), but I thought I'd pass on some information I looked up that might help someone else find a solution.
I'm 99% sure the Nav hardware unit (AKA the GM Silverbox... you can see here: http://www.sandyblogs.com/techlink/2008/02/integrated-center-stack-ics.html) is identical for 2008-2011 CTSs. That leads me to believe that the inputs existed, but were never used.
I looked up the pin-outs in the Service guide for both the 2011 and 2008 CTS.
There is a 20-pin gray connector that attaches to the back of the nav unit. This connector has provides various audio and voice inputs to the nav system.
Pins 5 and 15 provide signals from the rear-view camera to the system (Circuit 6972 and 6973).
In the 2008, I checked Pins 5 and 15, and noticed something interesting. These pins are not listed as NOT USED (such as Pin 12), but rather as COAX, as well as wiring colour. This leads me to believe that these two circuits are undocumented, but exist (In the pin-out list, there are other COAX connections that lead to other components in the car, such as the USB input and Nav display).
The big question is: Is there wiring already place that terminates to these pins, or would new wiring need to be installed?
I also checked the pin-outs of the camera. The 2 camera circuits (6972 and 6973) directly terminate to the camera. This tells me that there are no other components to the camera and the camera is simply providing an analog video source to the to the nav system.
Something to note is that along with the ground/drain wires, there are 2 other circuits that would have to be tapped: The Backup Lamps Supply Voltage (most likely to indicate when to turn the camera on), and the Ignition Voltage (so the camera is only powered when the vehicle is on).
So this leads me to a couple questions to anyone wants to look into this:
Does the wiring harness in 2008-2010 vehicles already include the 2 wires for the rear-view camera?
Are the other circuits the camera requires, already available in the rear of the car?
Hopefully this may help someone eventually install a camera in their car.