Comand identifying speaker output wires

[tjamesbo]

I'm installing MY kenwood powered sub from the laid up 124 into my Vito to improve the sound ( particularly the bass ) and as The comand doesnt seem to have any Line in / line out connections I will have to use the speaker output wires ( it can be wired either way ) however I need to identify the speaker wires and their polarity and preferably without any further dismantling to get at the speakers
heres a couple of Images My comand is from an 2007 Vito with TMC interface as below thanks Boyd

 

[Diesel Benz]

This could be way off, there are so many different diagrams. The vehicle VIN would be useful if the colours do not match.

 

[tjamesbo]

Thanks Ill have a look at that My VIN isa WDF63960123377685

 

[Diesel Benz]

You have EN4:

 

[tjamesbo]

Thanks for that I'll check that out with the colours I have