DickD, I missed a set of AA478 and AA858 plug cables at a swap meet a couple of years ago. They were stranded-wire core, rubber insulated, with black woven cloth covering. One end had a hook for attaching to the plug and the other end had the usual brass end with rubber insulator cup for the magneto. They still had the tags on.I have seen other wires, all of which were black woven cloth exterior, with a variety of ends. Some spark-plug ends had the hook, some had a fork, and some had a round circular wire-looking end. The other end depended on what magneto the wire was going on - some were unfinished wire for the Edison CD, others had the normal magneto brass end. Plastic covered wire is later, I'm not sure when it started without some research. I have formed the opinion that wire with various color exteriors is a modern concept. I have never seen an old automotive catalog or tractor catalog where one was given a choice in color of plug wire. But, an opinion is just that.
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