As previously discussed, we have decided to go with a new harness entirely and wire KITT from scratch. There are just too many variables when trying to reuse an old harness. We will still need many of the connectors from the old harness, but all the wiring will be new.
We decided to go with harnesses from Painless Performance. I have done a lot of research and Painless Performance seems to have the highest quality custom harnesses, offering the most flexibility and great support.
KITT's chassis harness will be Painless Part #10201 28 Circuit Classic-Plus Customizable Chassis Harness -GM Keyed Column
KITT's Fuel Injection harness will be Painless Part #60101 1982-93 GM 4.3L V6; 5.0,5.7 and 7.4L V8 TBI Harness Std. Length
PowerBraid is a flexible, semi-rigid material, with a tough woven texture and appearance to enhance the look and protect the insulation of any electrical wires. I use something similar to this at work for all of our computer cable management. This stuff is awesome and much more resilient that the old plastic style sheathing.
Painless called me today to verify my order, and told me it should ship out today. I am really looking forward to receiving it, and I will do an unboxing video when it arrives!