You might not have seen this one.
https://brillman.com
He manufactures and sells the vintage type wire to most if not all the other vintage wiring harness makers/sellers.
I found prices to be lower than the rest, and quality second to none. Probably within your budget and can have original.

If they don’t list a harness for your truck they can make one with a good sample.

They’re working on a harness for my truck now, adding turn signals and trailer plug at the back.

Worth a visit just to see how they make the wire and the huge inventory of everything automotive electrical.

•1951 GMC 250 in the Project Journals
•1948 Chevrolet 6400 - Detroit Diesel 4-53T - Roadranger 10 speed overdrive - 4 wheel disc brakes
•1952 Chevrolet 3800 pickup
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"First, get a clear notion of what you desire to accomplish, and then in all probability you will succeed in doing it..." -Henry Maudslay-