Headlight Switch Cranks Engine??

No problem. Use the time to study up and make yourself some schematics of the systems you're having trouble with.

Here's some examples of schematics for a pre70 A-body. A car with steering column switch will have another connector, and colors and other things sometimes differ. Thats why the factory manual for your year is always the best starting point.

Main Power Feed Circuit.
(this one does not have the full charging circuit shown, its just power feeds)
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Same car; Starting, Run, and Charging Circuits.
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That started from this: Highlighting circuits of interest, then erasing the others.
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Even after erasing, its easier to understand by redrawing or rearranging: