Instead of the cassette player you mean, I know that the cd players with the CD player feature (in the makeup case) do not match the connection cables in the old cases. This is unlikely if you have any obsessions such as cd .alar and controlling the radio from the steering console. these can be connected to the Blaupunkt tape deck. It can also be controlled from the steering wheel control. In these cd players alone, I am overhauling the problem for almost 2 months. Either it compresses the cd, or as soon as you take it out, if everything works properly, it will not read the cd :) believe it. I am currently thinking about double religion style things. I've never had a 7 "navigation device in there and I'm going to make my own double religion :)