ASWC Wiring Clarification

RedShifter

Hey guys, just got a 2014 Red 370z Manual with sports and the first thing I did was install my Kenwood DNX8120. Made sure I had the ASWC on hand so I wouldn't have to take the dash apart again later. I read on a few different threads that the diagram that on the AXXESS document for installation may be incorrect. Is this true?

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So does the Gray/Red wire go to the pink wire? (pin 6)
Does the Gray/Blue wire go to the Blue wire? (pin 16) - There are 3 blue wires on the vehicle barnes.

I do not understand step 5. "Connect pin 15 of the vehicles harness to chassis ground." It appears to me that Pin 15 is empty, so what exactly am I connecting?

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I spent two hours trying to figure this out without success so I just put the dash back together.

Also, it is extremely cramped back there. The 8120 has a ton of wires! How do you guys manage all those for a nice comfortable fit back there?

Lastly, how do you guys make those connections to the vehicle harness? Just strip some of the wire insulation to join the ASWC wire into it?

Thanks in advance! Learning a lot on this forum.