Double din aftermarket install questions
 

I've already replaced everything AFTER the radio, i.e. sound processor, amplifier, speakers, and a sub. Now I'm installing a new head unit, probably a Pioneer AVH-4000NEX.

But I have a few questions. I've searched but I don't see any recent answers in the 955/957 forum, so hopefully somebody can help and this thread can inspire the next brave soul who goes down this path.

1. Where can I purchase a good looking double din trim kit? I've read about people getting surprised with cheap and ugly trims.

2. What can I use to connect steering wheel controls to the Pioneer head unit?

3. Do I need an adapter for the factory radio antenna?

4. Do I need an adapter for the factory backup camera? This head unit uses a composite video cable input.

Thanks.