Posted 17 November 2011 - 12:43 AM
It's not that bad - start at the ECU and work your way out from there. Basically any connector not connected to the Manifold, O2's, MAF, MAP, Ignitor, FP relay, Ignition relay, diagnostic connectors, or Alternator gets cut - any wires that go back to the ECU leave as long as possible when you do your cutting. Then trace out what each of the wires going to the ECU that got cut do based on your diagrams and wire them up. Besides a little bit of confusion that is bound to happen surrounding the power feeds from the fuse panel - it's pretty simple and straightforward.
The power and ground circuits are somewhat confusing because they branch out all over the place - just remember that any connector that doesn't go to one of the devices you need gets removed - you trace it's wires either to another connector you don't need (cut and remove as much as possible), to a factory splice (cut it there and leave the circuit intact except for the branch going to the connector you are working on), to the ECU (leave it as long as you can), or to another connector that you need (figure out what it is and label - leaving it as long as possible from the connector you are saving). Follow those basic 4 rules and you can't really go wrong.
Once you do a few and you are able to recognize the connectors from memory - it's almost an auto-pilot job. I can pretty much do a harness from whole to install-ready in about 4 hours. :-p