TerminarorX5,
thx for your hint.
The camera does not fit, not because of it's size, but because the inside of the trim which holds the opening button and the license plate lights are a unique piece, with a circuit board inside, so, it's not possible to remove the bulb holder, only the transparent plastic window, which i discover, has part of the tabs broken.
So, i'm considering the following:
Getting the other camera i have (
Car Rear View Reverse Camera for BMW 1 3 5 6 7 Series x3 x5 x6 All BMW | eBay), cutting the cable from the camera to the splitter, make it fit to the lights and push button connector, make mini three pin connector and connect it to the splitter, which will be inside the rear door. As these cable is not shielded, i think it will not pose a problem. After done, i will pots the pictures, so to go further.
Best regards and thx again for the hint. Spared me time
Paulo