@TorsteH I tested it and the lines move when i move the car itself or the camera itself. I guess that means getting calculated by the came like you mentioned. Still the head unit is connected to the canbus. I am able to use the other typical canbus features like using the buttons on my steering wheel to change the volume of the head unit etc.I found some hints from another camera:
It seems to be important how the camera gets mounted:
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The lines getting calculated by the cam based on the moving. This means it will not response with adjusted lines if you only change the angle of the steering wheel. As I mentioned that's only possible if your head unit is connected with the cars CAN bus.
So there is nothing you can change on the head unit itself because in this scenario the head unit is just a stupid monitor knowing nothing about the lines. According to the product description of this camera you must turn off the lines on your head unit if you see too much lines - what makes absolutely sense to hide the static lines painted by the head unit.
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