Can you add an after market b/u camera on a PCM Version 3?

 

My 2014 Cayenne did not come with a backup camera and I was able to add using NAV TV module and camera. It is not cheap and there are other modules out there that are less money. With the NAV TV module, you can add any aftermarket camera or use their handle camera which looks OEM, but does not have the guide lines in the image.

 

Yes - there are several threads about doing this - and there may be some in the DIY forum. A bit of searching on your part should turn them up.