Recently received my new "original spec" harness from Rhode Island Wiring, for a '41 ton & a half. Yes, pricey, but excellent service, and they clearly care about it being accurate. I had replaced the horn button wire in the steering column, and they had me dig out a piece of the original so they could match the color pattern on the new. I sent in everything I could, including the taillight housing and the parking light fixtures, so they could attach everything properly.
Now to install it . . .
-Michael