Adding Subwoofer to 2014 M5 with B&O

[M5 Power]

Hi Guys,

I want to add one JL 12W6v3 and JL HD 750/1 to my 2014 M5 with B&O
I need to find the left & right Subwoofer speaker wires and the remote trigger wire
I have attached is the picture showing the wires from the B&O amplifier to the speakers

I found only two pairs of wires which are thicker than the rest
• Blue/Red & Blue/Brown
• Black/Red & Black/Brown
I believe these are the two subwoofer wires but I need to confirm them also it will be nice to know which is the left and which is the right

Also want to know the remote trigger – somewhere on the net I read it’s the green one but again not sure
If anyone knows the answer or have the wiring diagram for 2014 M5 with B&O please share it with me

Thanks