making wiring harness from scratch

First of all guys, thanks for the participation.

About traveler cable, it MUST be fire rated to exist in the elevator shaft by every code under the sun, so heat will not be a real problem.The real benifit of TC is because it must stay flexible it has more strands than normal wire so the larger gauges can still be used. As I said earlier I have 18 & 14Ga. I think most of the OEM wiring harness is 20 & 22Ga.

Factory correct connectors only apply to the lighting and some of the engine accessories, for those I will be re-using the plastic part of the connectors and getting new brass for the wire ends, no pigtails here.
About the bulkhead connector, using one gives me the ability to build this system in sub assemblies, which is very convenient.

Why do this you ask. because this car will have systems that exist in very few other cars if any and a factory set up just will not do. I will either be getting a Painless fuse block or salvaging one or a couple from a modern vehicle. The six glass fuse panel is history. Also this is what I do. I love building things and I build them my way, which to is say not always the easiest way, but is the most satisfying.
Andrew