Yeah Mike, all I need is a tough bit of clear perspex or plastic to cover the camera (from inside the tailgate) as there are few holes in the tailgate around the number plate area.
Have decided to mount it either to the side of the squre JDM plate or cut a hole in the reg plate middle. Havent removed the reg plate, all will depend where the holes & space is in tailgate.
Also have to find a live wire to power the camera, ideally near the back of tha car. (well always live once ignition is turned on). I think the Bose is always powered on after turning ignition as I can hear a faint electrical humming sound from the amp or speakers behind me. ?