I have some feedback which might be useful for the people above or anyone else that is interested. Stupidly I forgot to make a picture of the kit lying on my table, but basically this image will show you exactly what you will get, including the terrible manual which does not help. There is an av/extender included where you can connect the two cables to. The top right cable connects to the camera, goes through the car back to front, which connects to the bottom cable. The red wire gets the power from the headunit. The holedrill that comes with it is too small for the camera, so be prepared to sand quite a bit more off to make it fit.
I used a dremel to create a little notch in the back for the cable to sit in, so you get a better viewing angle (you can see on the last image why)
It is hard to see what is up or down on the little camera so don't start taping and bolting everything down before it is aligned.
Once it's installed it looks very discreet and snug. there is a little indent at one of the sides as you can see, hence I made the notch in the back so you can actually move the camera that far in.
I used this youtube video to get me through the installation of it all: https://www.youtube.com/watch?v=daiDH2v4wUg
It is my first time doing such an install and with trial and error (and using the dremel afterwards to increase the viewing angle) it took me around 3 hours to complete.