I fitted a Kenwood DNX-7200 to my A4 Cabrio (It was double Din). Looks great
Anyway, what you need is the following:
1* facia panel - see
www.autoleads.co.uk or go to halfords (if money is not object) - there are 2 different types - one for singe din and one for double din.
1* Aerial adapter normal - PC5-90 - check these before purchase to ensure both ends match your car/radio
1* Aerial adapter Diversity - PC5-237 - check these before purchase
1* Aerial combiner - or do it yourself if you are good with a soldering iron
Speakers - if using stock speakers then you don't need to do anything
1* radio to Amp adapter Auto leads PC9-404 - if you are using stock amplifier - note your radio must have preout capability.
Now for the fun part: If you want to use the can bus then you have to get a can bus adapter: see
WWW.connects2.com - I had have one of these but never used it - might sell it if anyone is interested. For most radios you only need an ignition connection and one for the lights - I took these off the back of the light switch.
Also to be strictly correct you will need to get someone with a vag and reprogram your car to tell it not to expect a radio - can't remember exactly where you do this but if you google you will probably find it.
You don't need the canbus stalk adapter.
Walter.
BTW combine the aerials it makes reception far far better
