<center><img src="http://pages.scrippscollege.edu/~jeff/bose/connectors.gif"></center><p>
For those of you upgrading you TT's audio system.... here are the pin outs for both the standard Concert and Concert/Bose. If anyone also needs wiring diagrams I can post them on Monday.

Jeff

Not Bose

multi - pin connector I, 20 - pin
1- Line out, rear left
2- Line out, rear right
3- Audio frequency Ground
4- Line out, front left
5- Line out, front right
6- Switched positive supply for active loudspeakers
8- Clock signal for radio frequency display on instrument cluster
9- Data signal for radio frequency display on instrument cluster
10- Enable signal for radio frequency display on instrument cluster
11- Remote control (steering wheel)

Multi - pin connector II, 8 - pin, brown
3- Loudspeaker (+) front right
4- Loudspeaker (-) front right
5- Loudspeaker (+) front left
6- Loudspeaker (-) front left

Multi - pin connector III, 8 - pin, black
1- GALA (road speed signal)
2- Telephone muting
3- K diagnostic
4- Connection for switching on and off via ignition key (S contact), terminal 86s
5- Switched positive supply for power antenna
6- Switch illumination (terminal 58s)
7- Terminal 308- Ground (terminal 31)

Multi - pin connector IV, 10 - pin, red
1- Telephone muting
2- Terminal 15 (only on vehicles with navigation system)
3- Telephone (audio frequency +)
4- Telephone (audio frequency -)
5- Navigation system (audio frequency +)
6- Navigation system (audio frequency -)
7- Navigation system control wire
9- Display illumination (terminal 58d)
10- CD Ground (CD GND)

BOSE

Multi - pin connector I, 20 - pin
1- Line out, rear left
2- Line out, rear right
3- Audio frequency Ground
4- Line out, front left
5- Line out, front right
6- Switched positive supply
8- Clock signal for radio frequency display on instrument cluster
9- Data signal for radio frequency display on instrument cluster
10- Enable signal for radio frequency display on instrument cluster
11- Remote control (steering wheel)
13- Data - in signal for CD display on instrument cluster
14- Data - out signal for CD display on instrument cluster
15- Clock signal for CD display on instrument cluster
16- Permanent positive connection
17- Switched positive supply for CD changer
18- Ground connection for CD changer (CD audio frequencies, Ground)
19- Signal wire for left channel (CD audio frequencies, left)
20- Signal wire for right channel (CD audio frequencies, right)

Multi - pin connector II, 8 - pin, brown
3- Loudspeaker (+) front right
4- Loudspeaker (-) front right
5- Loudspeaker (+) front left
6- Loudspeaker (-) front left

Multi - pin connector III, 8 - pin, black
1- GALA (road speed signal)
2- Telephone muting
3- K diagnostic
4- Connection for switching on and off via ignition key (S contact), terminal 86s
5- Switched positive supply for power antenna
6- Switch illumination (terminal 58s)
7- Terminal 308- Ground (terminal 31)

Multi - pin connector IV, 10 - pin, red
1- Telephone muting
2- Terminal 15 (only on vehicles with navigation system)
3- Telephone (audio frequency +)
4- Telephone (audio frequency -)
5- Navigation system (audio frequency +)
6- Navigation system (audio frequency -)
7- Navigation system control wire
9- Display illumination (terminal 58d)
10- CD Ground (CD GND)

 

Do you know if any of the speaker outs are not in use? It seems if there's both line outs and regular outs, one set would be waiting to be used for a sub or something. Any ideas? Thanks.<p><img src="http://www.g3.com/sean/images/tt-sig.jpg">

 

Using the speaker level output from the back of the concert is not IMHO the best choice. You would most likley what to either put a crossover inline with the BOSE speaker level outputs to the rear Woofers (Pin 14 +, Pin15 -) on the BOSE Amp connector, preserving any "BOSE Audio enhancements" or use a crossover inline with the line level outputs to the BOSE amp to provide a SUB out to an external amp and Subwoofer. The line level outputs save you from the effects of any amp induced clipping/distortion. Also, I believe the BOSE uses only the "front" line level out from the Concert Radio so you could use the "rear" to feed the sub.

FYI - the Right and Left rear BOSE Woofers are connected in Parallel to the above Pin 14 and 15.

I'll post the wiring diagrams on monday.

Jeff

 

&lt;p&gt;<A HREF="mailto:jbipes@comcast.net"><img SRC="http://pictureposter.audiworld.com/AudiWorldPics/2000/bipecott.gif" BORDER="0" alt="Jeff Bipes"></a>

 

<center><img src="http://pages.scrippscollege.edu/~jeff/bose/radio.gif"></center><p>

 

<center><img src="http://pages.scrippscollege.edu/~jeff/bose/radiotocd.gif"></center><p>

 

<center><img src="http://pages.scrippscollege.edu/~jeff/bose/radiotoantenna.gif"></center><p>

 

<center><img src="http://pages.scrippscollege.edu/~jeff/bose/radiotoboseamp.gif"></center><p>

 

<center><img src="http://pages.scrippscollege.edu/~jeff/bose/BOSEamptospeakers.gif"></center><p>

 

Thanks also for the diagram. I have a 2000 180hp TT. I want to install my Sony MDX8970 Mindisk head unit along with a 10 disk changer.

Question 1: What do I have to do to install this unit to work with the existing speakers and/or amp? Do I need to get a new amp to work with the speakers?
Question 2: Where is a good place in the car for a CD changer? I was considering the back of the right rear passenger seat. (as if I could have a rear passenger besides MiniMe!).

I would appreciate advice from anyone who has modified their system. Thanks!!!<p>TT Coupe 180hp Slvr