cheers shings will be emailing parrot tomorrow now, as plug and plays the only real option. And see what they say / recomend
If you want to know owt in particular PM me, I will talk to some of my mates and see what they suggest regarding an install if needs be and help where I can otherwise.
I have been out of it 12mths so haven't personally taken apart a new defender.
BUT- I must have fitted 1000 Parrots