Hi Russ,I used a different solution recently in my 110.
Granted a lot easier as it had a simple head unit, I just bought an after market headunit with bluetooth phone - £150 10 minutes to fit.
Probably not possible if the D3 has sat nav etc, but might be worth looking at.
In my wifes D3 we had the after market bluetooth kit fitted. Cost circa £500 and not really worth it.
It works okay & fits in very neatly, but not much intergration, you cannot download the phonebook for example.
regards
Paul