Carl,
For what it's worth, I got my cloth-covered harness from Vintage Wiring of Maine. Not sure about YNZ, but VWOM sends along a nicely done and easy to follow installation guide, too. It made rewiring fun (at least when I did it to my '49 BigBolt), plus it will give you something useful to read while you're recovering from the sticker shock in the oxygen tent ...

John