Yep, went back through the entire thread and found the green/blue wire.
Please correct me if I’m wrong, but looking at the schematic in #153 I see some reference to “blunt cut configurations” I’m assuming they map as so:
Aux 1 - Blue
Aux 2 - Grey/Black
Aux 3 - Brown/White
Aux 4 - Yellow/Brown
Aux 5 - Green / Blue