Mate,

I looked at the harness that you have bought from the ebay and I am not so sure it is the actual harness to connect the rear camera - this harness has one yellow RCA plug, normally yellow is reserved for video, one white and one red RCA plugs, they are normally reseerved for stereo audio and the OE TV module does NOT have STEREO audio, it is only MONO, and then you have a black plug, which might be for the reverse camera. I am not saying that it will not work, it might - please, when you take pictures of this wire loom, make sure that the labels are clearly visible. Even then, there is no guarantee that the maker of this loom has connected the correct wires to the correct pins - the OE tuner has Audio/Video IN, which is 2 cables/4 wires, and it also has Audio/Video OUT which is 2 cables/4 wires, it also has Reverse camera IN, which is 1 cable/2 wires and it has a trigger wire that comes from a different plug - only a single wire.

So, for the rear camera to function properly, you will need to have a camera, that should have 2 wires for the power (+) and (-), and 2 wires/1 cable for the video OUT, and then you need to utilize the rear camera input on the TV module, 1 cable/2 wires for rear camera IN, and the trigger wire that needs to be grounded when the car is in reverse gear.

Usually folks are making their own wiring/cabling, but lets work with what you already have purchased - since I can't fly down under to take a look at your stuff, do the pictures, and we will take it from there...

ciao, mate...