Cool!

Although my BMW is a bit different, I'll be interested to see what I can do with mine then. I don't think I'll be able to display song titles though

Quote:
The fun part of the whole project is that since 10 minutes, thanks to an enhanced interface, I don't need any RS232 output (apart the TX signal of course) anymore :-O

Surely you still need to both transmit and receive? Or are still controlling the empeg by it's front panel/remote and ignoring what the interface sends to it? I would have thought you would need to respond to interrogation commands so the main display knows the CD changer is actually there.