I have just put the stock Becker grand prix 612 in my 85 300 sd my other sony went bad also my motorized antenna went bad also so I am trying to go with a regular non motorized version. 1st thing I realized I had to buy a metra 40-vw16 adapter to go from motorola coaxial end on the antenna cable to the antenna cable end which plugs in and the other end screws onto my old antenna cable. If I did'nt have this adapter I would have to run a whole new antenna cable from radio to back fender which seems like it would be a big pita.. When I hooked it up I get no reception I even tried one of those square box mount it on the windshield antennas and got nothing. Any idieas as to why I cannot get hardly any reception? I have a posting in the audio section and got no replies hoping to get some thoughts on the matter hear as if anyone has replaced their motorized antenna with a fixed one. I would be happy if I could get 5 or 10 stations with clear reception.