Thanks for the info!

Hmmm, two wires and ground. The control could be a resistor based system like the Sony stalk... but the connection to the display is bound to be some sort of serial.

I could live without empeg info on the built-in screen, but it would be nifty... (do you know if other data, like fuel consumption, also passes through the radio or if it goes to the display through another route?)

Haven't decided yet if I'll go for a new car or keep my VW Polo for a while longer. Will let you know if I do get it.

/Michael