Hello, since 11.2014 I have a Hymer B680 Starline built in 2013. I bought it from the Hymer Center Stuttgart from the rental company. It has a Blaupunkt NewYork 800 as Navi (with truck software). But it was installed so that the volume and telephone steering wheel control does not work. I bought a corresponding CAN bus adapter from the internet and wanted to install it. When I wanted to expand the radio (already pulled out) hit me. see photos. The CAN Bus K Abel of the Sprinter was simply tweaked. The wiring is the pure catastrophe! Something like this is called “German quality work” If you buy a new or very young camper for tens of thousands of euros, then please look at how this is done. Such a thing certainly does not last long. After a long time back and forth with the Hymer Center Stuttgart I was told that these cables are deliberately tweaked so that nothing else can be connected. n Original Mercedes Radio wants to install? Does anyone have the opportunity to get me an original Mercedes plug and also the correct original occupancy? please PM Thank you for your support. LG