Reproduction wiring harness

[mrein3]

For what its worth, I like to save a BUNCH of money on projects like this and roll my own wires. Most of the terminals are "Packard Type 56" connectors. You can easily remove the terminal end from the plastic connector, match the wire color at any home improvement or hardware store, cut the wire to length, crimp on the new terminal end without needing specialized tools other then the crimper/stripper already in your toolbox, and save the money you saved for extra cold snacks.
I did a quick google for "Packard type 56 connector" and saved these photos.
If you go this route, do have a care when ordering terminal ends. They make ends specific for 18 gauge, 14-16 gauge, and 12 gauge wires. Most of the wires you'll need to make are in this range.
I "stock" these connectors in my electrical box so on a Sunday afternoon when everything is closed I can still make wires when I need to.