Battery cables -where does the negative go?

Joe, although this is for a ‘65, this is the closest thing I have to “the Bible”: February ‘65 Hot Rod. Check it out...

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Strange looking cables. I have never noticed that style on a Mopar before. I thought because it was a Hot Rod article it might be a California build. Now I need to look other magazine articles and photos. My 66 Dart gas the original positive cable and it doesn't look like that one. Interesting.