Hi folks, I have a 1991 420 DA with a problem with the radio/ hifi speakers. pretty straightforward one would think eh? Not so... So, the radio unit is fitted onto the side of the deck sink unit, the one that 'used' to house the ice maker. There are a set of speakers upstairs, one either side of the radar arch, and another set under the couch downstairs. A switch at the helm allows you to switch-off the upstairs deck set whilst the set of speakers below still play. So, the problem is that nothing is coming out of the speakers.. Any of them at all! This is also intermittent and infuriating! I have taken one of the speakers and connected it directly to the back of the radio unit, and it works fine... It would imply that there is a dedicated harness to this because the colour of the speaker wires are different at the speaker ends to the radio connection ends. I wonder if there is any link to the historical 'entertainment centre' which was removed years ago.. Or is there some kind of distribution switch / harness setup used? I could just simply hardware the speakers with new dedicated cables, but I would like to resolve this... Has anyone any ideas of the cabling layout?