Hi! I have Alfa 159sw 2010 2.0jtdm.
I had a standart radio navi,I don't like this thing because it have a lot of problems with playing usb, there is no aux and etc.
I bought Alpine CDE-W235BT. Also I have subwoofer Focal Performance P 21 V2.
Also I bought: adaptor for VW Touareg (I didn't find some adaptor for alfa), frame-adaptor for aftermarket radio (http://www.ebay.com/itm/120883242442
Some info about plug on the car: contact from 1 till 8 goes to speakers. Contacts 12 and 16 plus and minus. Also we have another 2 contacts number 9 and 14 (I didn't use them) and I thinking that they goes to steering wheel control, when I tried to use it with adaptor I receive some error messages about airbag and protection key. I guess a little one plug goes to USB.
I can't found "yellow" wire in standart plug, so I connect yellow wire from cigarette lighter.
Power cable goes through rubber cap which I found under windshields and plastic grill. You must be careful when drill a hole, cause near many wires. After that don't forget to use silicone sealant. In cabin you can find cable to the left of the clutch pedal. After cable goes below the threshold and goes to trunk.
Problems and some questions:
Mileage and time always flashing, cause car can't find standard radio. I though that it will stop flashing after connecting blue&me module (I replace it under panel from passenger side) but not.
How I can stop flashing mileage?
How I can connect steering wheel control? (contacts 9 and 14 if I don't mistake).
Thank you and sorry for my English. Hope this information can be helpful for someone.