W140 S class Telephone pre-wiring

kjj90210

New Member
Joined
Feb 29, 2008
Messages
29
Location
Cumbria, UK
Car
S300 TD
Hi,

On my W140 S300 TD (1998) WDB 140.135

I noticed there is already a wire installed in the loom that connects to Pin A3 (phone mute colour grey with blue stripe) on the ISO radio connector.

There is no sign that a phone has been installed in the past and there are no antennas to be seen.

Is this likley to be pre-wired for a phone or not?

Where will the other end of this mute wire be located?

Thanks.
 
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