[s-cars] Wiring connections for hands-free phone, etc.?

[Steve Powers]

I did this job about 8 years ago, installing a Nokia handsfree kit into the car.

The existing wiring terminates in a DB-25 connector at the amplifier.
The mute, power, etc. signal were all available there. I built a DB-25
cable which connected to the harness and grabbed the signals needed.
They are readily identified in Bentley.

Adapters from SMA or BNC were needed to connect the new box to the
existing antenna.

I did have to run wires to the speaker and also to the microphone.

Not a horribly complicated job.

Steve

On 4/15/05, Doug L <landaeta1 at comcast.net> wrote:
> Friends,
> 
> My UrS4 rolled past 100K this past month and I thought it 'bout
> time I re-acquainted myself with modding.
> Can anyone reference where is the easiest connection points for
> radio mute, ignition power, and possibly the existing telephone
> speaker? I've saved all the accessory work for the same major job
> (Satellite radio, Siemens Hands-Free, and a PocketPC Navigation
> system.  Any help is better than digging through the Bentley
> Wiring diagrams and trying to match the wire colors and
> locations!
> 
> Thanks, Doug L
> 94 S4
> 92 500E
> 
> 
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