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pyrogen007 said

I get what what you're saying, but I was looking for upgrades to the factory wiring and stated that in the original post, I read his post as, the wiring is perfect the way it was when new, which even when brand new it was a compromise of available materials/technology and the bean counters scrutinizing every penny, so there are improvements that can be made for the sake of safety/reliability/ease of maintenance. I would argue that even modern cars face the same problem of materials/technology and bean counters lowering the vehicle's potential.

Click to expand...

You're asking a general question and you got some general answers.
These cars including their electrical systems and components changed over the years, and even within a same year there were various electrical options. We could spend an hour (or more!) discussing all the flavors and how some are better than others for various reasons. The very first models wired the power supply to the starter and the headlight switch and the very last US model year split the power in the engine compartment and used a shunted ammeter.

If we were giving specific suggestions they would vary greatly depending on the specifics of one had and what one wanted to do. I lot of problems we see posted here are self-inflicted, probably as much by previous owners, mechanics and 'upgrades' as the member posting. Heck I'm as guilty too of dismissing or ignoring some of the wiring provisions when I first worked on cars. All that 'junk' was in the way of my wrenching - why put it back. Now I know...