Before i did manage to de-code the unit with the cn+ the multichanger spun the disc and relayed all info to cn+ just did not play
now cd multichanger is de-coded it will flash red( flashed green an red before )and as i said by pushing the voice recogonition button twice car is now asking for a code ,
so given that to connect a cd-multichager to a visteron head unit you have to input code using radio,repeat buttons ect their must (surmising) be a sequence to re connect one to a cn+ unit
just hav'nt found it yet so my home brew remedy goes on , i'm hoping that danhans knows of away or knows of a website will have to wait and see when he comes in