[I'm editing this WTB based on Mark's comment.]
If anyone has a good 1973 harness for a reasonable price, I'd be interested. Otherwise, I'm going to start working through my nasty main harness over the winter. I'd love to get a chunk or two of an already trashed harness to have a selection of color coded wires for splicing in what rodents have carried off over the years. One foot lengths should be more than enough. I think anything longer than that will warrant sourcing new wire.