Audi A3 8L Concert Stereo Upgrade

[Red Ed]

I am replacing my Audi Concert, rear amplified, with a Sony DSX-A40UI (Halfords | Sony DSX-A40UI Radio with iPod/iPhone, AUX & USB connectivity).

I removed the Concert stereo and connected the car wiring up to a PC9-404 and an amplified ISO adaptor.

There remains a single brown connector which was screwed into the back of the Concert. What is this and where should it go?

There is a blue wire coming out of the amplified ISO adaptor. Where should this go?

The aerial adaptor doesn't fit into the back of my new stereo, I must need another adaptor but other than that sounds comes out of the speakers and when I take the key out of the ignition the stereo turns off.

However the stereo is not storing memory so I guess I am missing a permanent live connection? Surely there was one for the old Concert? What to do?

Thanks for any help - this is another 10 minute job that is taking all day!

 

[Red Ed]

Well I solved the memory problem. It seems that my live and switched live connectors were the wrong way around.

 

[Emmo]

Connect the blue wire to the remote antenna cable from the headunit.

 

[Red Ed]

Thanks Emmo. I thought about it overnight and came to the same conclusion.