I have a mk 5 golf tdi with the double din radio . I have managed to get hold of a vw sat nav system that apparently is a straight forward change over as all the plugs etc are already fitted at the factory. My problem is how do I remove the facia around the radio so as to gain access to the radio fixings and where does the sat nav airial fix. the facia looks like it is in 2pieces but I cannot get the bottom part to separate and I do not want to break it