Well, he's provided wiring schematics and diagrams of the wiring harnesses for the Gamma, Beta, Delta, and Delta/Bose factory stereos - so basically, he's given you all you need in order to figure out which wire is which and therefore where to splice what when installing an aftermarket stereo.

Not exactly a step-by-step, but damn useful nonetheless. Thanks Dave!

 

right I know... but which wire would power the factory speaker amp?

--thanks

 

Looks like it's probably pin #6 on Multi-Pin connector I . Which factory system do you have, specifically?

 

I have the concert (none bose) radio cassete player... im not sure what brand it is but its from a 98 a4

 

Radio Systems[/align]General overview of "symphony" radio systems -Saloon-[/align]










1. Radio with CD player

â—†Installed in centre console
â—†Removing and installing
[/ul]
2. Loudspeaker installed in rear shelf

â—†Wide-band loudspeaker
â—†Removing and installing

â—†Bass loudspeaker (with BOSE sound system only)
â—†Removing and installing
[/ul]
3. Aerial amplifier

â—†Under left and right D-pillar trim
â—†Removing and installing
[/ul][/ul]










4. Rear window aerial

â—†FM1, AM, FM2, FM3, FM4 aerials
â—†Removing and installing [/ul][/ul]


5. Aerial amplifier

â—†Under left and right rear shelf
â—†Removing and installing
[/ul]
6. BOSE power amplifier
(with Bose sound system only)

â—†In rear left of luggage compartment under rear shelf
â—†Removing and installing
[/ul]
7. CD changer (optional)

â—†In rear left of luggage compartment
â—†Removing and installing
[/ul][/ul]










8. Control unit for aerial selection

â—†In rear left of luggage compartment
â—†Removing and installing
[/ul]
9. Wide-band loudspeaker

â—†In rear door trim (with Bose sound system only)
â—†Removing and installing
[/ul]
10. Hands-free loudspeaker

â—†In front driver's door.
â—†Removing and installing

â—†Only for vehicles with BOSE sound system in conjunction with telephone
â—†For all other vehicles, the loudspeakers in the front door trims are used. [/ul][/ul]










11. Bass loudspeaker

â—†In front lower door trim
â—†Removing and installing
=> Page [/ul]
12. Mid-range/treble loudspeaker

â—†In front upper door trim
â—†Removing and installing
[/ul][/ul]

[IMG]local://upfiles/12092/5B33317D6C7842E991C90CA1DEA85810.jpg[/IMG]

 

opps wrong one but never mind some one else might need that.






Radio Systems[/align]Overview of "chorus and concert" radio systems -Avant-[/align]










1. Radio

â—†Installed in centre console
â—†Removing and installing
[/ul]
2. Bass loudspeaker

â—†In front lower door trim
â—†Removing and installing
[/ul]
3. Mid-range/treble loudspeaker

â—†In front upper door trim
â—†Removing and installing
[/ul]
4. Wide-band loudspeaker

â—†In the rear door trim
â—†Removing and installing
[/ul][/ul]










5. Aerial base

â—†With integrated amplifier [/ul]
6. Roof aerial

â—†For radio, telephone and navigation system, a combination aerial is used.
â—†Removing and installing
CD changer
(with "concert" radio only) [/ul]


â—†In rear left of luggage compartment
â—†Removing and installing

â—†Check wiring
[/ul]
7. BOSE power amplifier, combined with bass loudspeaker (subwoofer) - with
BOSE sound system only

â—†In rear left of luggage compartment behind side trim
â—†Removing and installing
[/ul][/ul]










9. Bass loudspeaker (subwoofer)

â—†In rear left of luggage compartment under side trim
â—†Removing and installing
[/ul]
10. Hands-free loudspeaker

â—†In front driver's door.
â—†Removing and installing

â—†Only for vehicles with BOSE sound system in conjunction with telephone
â—†For all other vehicles, the loudspeakers in the front door trims are used. [/ul][/ul]

[IMG]local://upfiles/12092/18041670513A4264829F7504B489655E.jpg[/IMG]

 

Dave- just to make sure I'm reading that correctly; for Concert non-Bose systems, are all four speakers powered by the head unit? Or is there a seperate power amp for the rear channels in the saloon model (like with Delta etc.)? And do you have a diagram for the connectors on the back of the Concert h/u?

 

What exactly are you trying to hook up?

 

I installed a cd player... but the rear speakers don't work...

I've tried locating the wires for the rear speakers and with daves help I found them but I think that they need to be powered because the left rear speaker seems to have an amp attached to it.... and I remenber reading somewhere that theres a wire that needs to be connected somewhere in order for the rear speakers to work...

dave has been helping me for awhile now and im very thankfull for that....

right now I have it hooked up but evrything is working except for the rear speakers...and I don't wana take it to best buy or anything like that because they overcharge for work on german cars

 

hes fitting a aftermarket single CD player and the rear speakers wont work and thinks its down to an amp on the rear which they run through so needs power to make the rear speakers work so im thinking the same as you like 20 pin connector pin 6 positive switched