The camera is an option when buying.The European version dont have a camera. Just the digital image of the car, pops up when u put i in reverse. There are already made room for a camera in the back. But there is just a hatch over the hole. I too would to like to add a camera.
If you remove the interior trim from the hatch you should be able to see if the harness is present. My guess is no. Copper wires are expensive and the manufacturer does not incur any extra time/labor penalty for not installing it. So why would they install the harness by default?this is a good question. i also wonder if there is already a harness installed (small possibility)