In Reply to: Re: How do you keep busy? posted by Larry TX on January 21, 2019 at 10:35:51:
Can't speak for General Motors vehicles but my 1952 Ford was 6 volt. Pretty sure 1953 Fords were 12 volt.
Taught a class on transistors, probably in 1960. They did not make their way to cars for several years. Starting with output transistors and later moving into the signal transistors.