groale

I see two model numbers when looking on ebay:
4B0 035 186A
8N0 035 186A

I was able to confirm one person selling the "8N0 035 186A" that theirs was a BOSE model. Does that make the 4B0 model non BOSE?

I am looking to take out the Delta from my 98 A4 and slide in a Concert and I think I need the BOSE to make it tryuly plug and play without the need for a VAGCOM? I have read over 40 threads on this so I hope Im not missing it.

Thx

DirkM

It's the amps/speakers which make the difference. You can code any recent head unit (Concert/Symphony or newer) either via VAG-COM or via a wire to be Bose or non-Bose.

The 4B0 has a faceplate fitting the A6 C5, the 8N0 is TT IIRC. Different faceplates for sure, none may fit the A4 B5 right. You are looking for a unit starting with 8D0 035 186, not sure about the letter at the end but all of them should work.

doogney

I need a wiring diagram for Model 4B0 035 186A REF #CQ-LA 1610L.
I would like to use the Bose concert used in my old AUDI A4.