Hello municipality, there were already some threads about it, but I want to put my finished solution to the end in a new topic. Honestly the original Navi was far too expensive for me, although it is already technically the best solution – operation via steering wheel, no own battery, neatly installed in console. These advantages are however not worth 2000 Euro extra price! Price of my variant: Console…55 EUR Navigon 8410…377 EUR DVBT module…58 EUR Installation went with FSE – installation with! Disadvantage:1. For updating the software or the cards, I have to take the aperture, but without tools with strong fingers. 2. With frequent TV operation and short distances the internal battery becomes empty and the device switches off. Switching on with office clamp over the small hole at the top left! 3. The volume on the AB is just acceptable – the headphone output is unusable and coupling Bluetooth to the FSE is unfortunately not possible – would be optimal, but unfortunately only for headsets. Despite the disadvantages I am completely satisfied with appearance and function!