We had Positive Ground in the same context that the Germans had to drink warm beer. If any of you have ever had a vehicle with Lucas electric you will be able to relate. The two different systems are in part related to the two theories of electricity as mentioned above. In the end it really doesn't matter neither proved to be better than the other.
**** engineers liked the positive ground electrical systems and because they were the largest automaker during the early years, many smaller companies followed suit. In the late 1940' when GM became the largest auto manufacturer engineers at GM belived negative ground was best. Because they were in charge so to speak (sorry, I had to work something in) they led the way. In addition GM made many of the electrical compoents for the independents, so...the independents had little choice to to conform.
The important thing is that you do not install any modern solid state accessory designed for negative ground....into any positive ground system. The results will not be pretty....Randy
