Thanks, yes, I agree, they don't directly plug into the fuse box, but lacking a picture that was the best way I could think of to describe where these harnesses connect. Perhaps I should have said that they plug into the underdash harness *very close* to the fuse box :-)
If these two harnesses are reproduced, I cannot find them listed by Alloy Metal. I have both of these original harnesses and both could likely be reused. I'm also reluctant to use a 50yr old wire, however, especially when the wire routes underneath the carpet. In, short, I fear a short..er, fire. I thought I'd check and see if anyone had purchased either of these harnesses from Alloy before I reluctantly go down the path of reusing the originals.