Yeah FTDTrainer

I think you hit the nail on the head. Getting good quality components are critical. You cant just buy the stuff from dodgy bros auto gear and expect a good result. I just bought a good soldering iron and that alone cost me $210. (Weller) If you are just going to get another existig harness and replace the old one, then yeah its easy. Just plug and play, but using an old harness defeats the purpose really.

The eaisest way to DIY is the Painless Wiring Systems. Still though, lots of hours in the shed, lots of fustrations, lots of burns, far too much anguish. If you are not in a hurry for the car, then yeah attempt it and learn heaps. Its something that I want to attempt one day. Just be prepeared for the elevated blood presure, the heart papatitions, nausea, and the pressure to get the car back on the road.

Are you getting the general idea that I dont reccommend it for anyone but experienced electricky gurus!!!
Painless wiring Catalogue