My 1962 Chevy truck has developed some worsening problems with not staring, as in the starter will not attempt to turn. I end up replacing the starter wiring harness and replace some wire terminals as well as the ignition switch and lock cylinder.
In the end we go for a little test drive.

Here are some of the parts I used:
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As an Amazon Affiliate I get a small commission if you order parts through these links.