Replacing Rear speakers in my 2011 MK6 R

[VW Golf R32]

I'm replacing the speakers in the rear doors and they come with crossovers.
I have identified the positive and negative cables but need help with the others. They are all in the one plug that goes into the mid-range speaker.
The order they are in is below.
Yellow and Brown = Positive
Brown and black ?
Red and yellow ?
Green and Black = Negative.
Thanks