It works
Pressed the CD button twice and up popped CD one to six on the display. The first five seem to be the first five playlists on the iPad and the sixth seems to be a random selection of the rest of the tracks on the iPad. I think I read somewhere it is a random 99 tracks
The only downside is that you cannot control anything above from the iPad itself when it is plugged into the car
Thank you all for your quick and friendly advice as usual - great forum