EVGA Supernova 1200 P2 has two wires coming from non-double wire pins
I'm getting ready to sleeve cables for an EVGA Supernova 1200 P2. I wasn't able to find a pinout that was consistent with the cables I have (not sure if its a particular revision or not), so I made my own. The problem is I've identified on the 24-pin connector more than one pin with two wires, but only one connection on either the 18-pin or 10-pin connectors. A specific example I have is pin 15 has one 16 AWG wire and one 22 AWG wire on the 24-pin side, but my multi-meter shows a lead only to pin 2 on the 10-pin using the 16 AWG wire.
Has anyone seen this before? Wanted to check before I slice up the original cable to find out.
Edit: Pinout for 24pin, 18pin, and 10pin added.