Wiring diagram help?? 2001 a4

[SkyA4]

So I scoured the tech section, google searches to death over the last 2 weeks, image searched, you name it...
The technical section for stereo wiring for oem integration is more dead than dead, so I figured I would maybe post in here in order to maybe get some help..

I have a 2001 A4 1.8t Quattro with the Audi Symphony I...
What I have is a complete S4 interior that I've swapped in including the Bose speakers. I also have an RNS-E which I got from a donor b6 which I'll be retrofitting in as well.
Now it seems all the information available is from 2005-2010, so it seems pretty outdated and there MUST be better, more reliable sources now.

What I need is the wiring diagram or some information on how to install the oem S4 BOSE amp into a non BOSE equipped A4. Is there a wiring harness that runs off the main harness for the amp/rear door speakers?
I want to install the amp and have the speakers working before I retrofit the RNS-E into the car. I don't want aftermarket, I don't care for aftermarket and overly loud... I want clean oem

Any help would be very much appreciated! And please, before saying "this belongs in the tech section", point me in a direction with links that currently are still operational or the information is up to date.
Also, please don't say "don't bother with all that work into a generic 1.8t a4", just know that this isn't the only thing this car is getting as I have a freshly built 4.2 and 6spd swap sitting in my storage that will go in to this car once I finish throwing a fresh, fully built NA vr6 into one of my corrados.

Thanks in advance!

[crazyquik22023]

I have some documents that will be very helpful to you on installing an RNS-E into a b5. I can send them to you when I get home later. Also just an FYI the b6 RNS-E faceplate will leave very noticeable gaps when installed into a b5. For a clean install you need to find a RNS-E from a c5, which are very rare and are very expensive when they do come up.

[SkyA4]

That'd be great! Thanks so much! Yeah, I'm sure I'll have to do some modifications, but I'll be able to chop up my original symphony head unit to help make the RNS fit

[richardodn]

This may not be directly relevant, but here's how it works on the 99 Avant with the Concert (single DIN) head unit. This may give you some insight on how things were done.

Some links
http://www.ibiblio.org/tkan/audi/radios/radios.html
http://www.wak-tt.com/vagcom/vagcomradio.htm
http://www.audiworld.com/forums/tt-m...-bose-1771631/
http://wirings.info/en/audi-diagram/

The non-Bose Avant is equipped with front door speakers, rear door speakers and a DVC sub in the way back. Mounted on the sub is a 4 channel amp. The head unit drives the front door speakers. Two of the sub-mounted amp channels drive the rear speakers and the other two drive the DVC sub. I believe the signal to the rear amp is derived the RR and LR line outputs.

The Bose Avant uses the exact same head unit with different codings. The amp is a rear mounted 4.1 amplifier that drives all the 4 door speakers as well as a SVC subwoofer. Signal to the amp is from the 4 line out channels. Be aware that the "magic" of the Bose system is really in the equalization and other signal processing. The head unit is the same hardware and the speakers aren't anything special.