Great guide! Thanks for the info. One question I have for you. I have a Corsair HX850 and I plan on using para cord. The problem that I see in my future is the 6+2 connectors. How should I go about sleeving those? The cord has a total of six wires but I need the 8 pin. Should I run two more wires where there are two blank spaces on the other end?
Sometimes the rails are active and what you are suggesting would work, however I wouldn't know until you test the blanks spaces (I am assuming you are talking about the spots on the connector) with a volt meter first.
Otherwise just splitting the corresponding cable to fill in the empty two holes and switching out your 6pin connector for a 8pin.