Hello, a colleague of mine bought a SLK 350 Bj. 2005 with Navi. Now he wants to watch the DVD’s he can only in the stand also while the ride gugn, how does it work? With my VW Passat 3bg, there was a Galla signal cable that had to be pushed. Is there that with the SLK also or does it look different or not at all. Would be nice if someone could help me further. Thanks already in advance mfg