Fitting is pretty easy, but I still have the buzzing sound.
It only stops when I mute the radio.
I wired up the Park wire (to earth) and the illumination. Now I can find the buttons in the dark.
Yesterday I tested the navigation system and it works great. It goes automatically from day to night setting.
When inserting a USB with pictures, it showed the slideshow.
DVD is now working as well.
But that annoying bass sound.