I just want to pull both connectors ( ech end) put sleeving on than put it all back togeather. Do you know what size sleeving to buy? 16 AWG is like 1.2/1.3 mm would 4mm od sleeving be to big?
Go with 18AWG wire 99% of the wires are that size as for the sleeving size 4mm is what you want to use since the sleeving can be stretched a little to fit the wire size. Removing one wire sleeving and replacing it before going to the next is a good way of going but it's always recommended to do a pinout diagram so you have the pattern you desire on both the mobo and PSU end. As I mention earlier there will be one or two on the EVGA G2 where there are capacitors that you will need to sleeve over, which I recommend extending the wires and sleeving to hide it behind the motherboard tray.