Not intended to criticize, please don't take it that way....
The green/white wires you reference from the chart you posted are for the 7 pin umbilical wiring. Green is "marker, tail, license lights" and white is "common ground"... How can we tell this? Look to the far right column and it indicates, "7 way umbilical connector"...
If you scan down a bit further, you'll see the "green/white pair" indicated as "interior lighting circuits" and the number imprinted on the pair will indicate the zone within the trailer lighting configuration.
Again, not being critical, just pointing out an often overlooked part of the way that chart was originally posted by Keystone. I think they've updated it to help avoid that easy to miss identification.