found this connector

[Col G]

Ok so I found this connector behind my radio when I removed the console. It appears to run down to near the interior fuse box along side a really small aerial type cable that I've seen connected to the factory fit radios.
Both of which I have no idea what they do?!

Here's the unknown connector, I dont have a picture of the smaller cable at the moment.

http://i1031.photobucket.com/albums/y376/col_g10/Mobile%20Uploads/20140129_212327_zps04sngeu5.jpg (http://s1031.photobucket.com/user/col_g10/media/Mobile%20Uploads/20140129_212327_zps04sngeu5.jpg.html)

[suffolk boy]

looks like the smart nav one

[Duotone]

Looks like a 12v dc power supply plug.

Not normally fitted to the 75 or ZT but could be for a hands free kit.

Dave T

[Duotone]

looks like the smart nav one

Not so sure about Smartnav unit.

This is a 75 Smartnav unit.

http://i93.photobucket.com/albums/l45/newfeather/T2eC16RHJF0FFZ-i8hILBRbCpLB1bw60_12_zps1b327ad6.jpg (http://s93.photobucket.com/user/newfeather/media/T2eC16RHJF0FFZ-i8hILBRbCpLB1bw60_12_zps1b327ad6.jpg.html)

Dave T

[Col G]

My 75 does have smart nav and it is fully functional.
Where Would I find that unit?

[suffolk boy]

it is not the smartnav plug then otherwise with this taken out it would not function

[Yozza64]

Looks to me more like its from some sort of in car phone kit

[Col G]

It must be aftermarket but there was nothing fitted to the car when I got it and there's no additional cabling anywhere!