I really like Prowireusa.com. Lots of choices of colors for their M22759/32 Tefzel wire. I’m a strong believer in having all wires in a single harnesses with unique colors… Or at least unique per connector. I remember looking at one of the ECU harnesses on my GTO (LS2), and sure enough one ECU connector had 3 different unrelated circuits with the same color wire!

So.. 21 wires per harness is my limit right now. Need to get some more colors.