Harry Dalek wrote:VW'S HAD A POSITIVE GROUND !
Assuming that was an expression of surprise...not only early VWs but quite a few of cars produced post-war were also positive ground. Also quite a few were 6V. But the cold European winters meant that many 6V cars refused to start, even when they did the lights were dismal.
I believe that the change to negative ground, where applicable, was it was found that negative ground cars were slightly less prone to corrosion. How true that is I don't know. There may have been other factors too. Only having to produce generators (no alternators then) for positive and negative ground versions on a production line for example.
My first car was a 1969 UK-made Ford Escort MkI, all 1100cc of it! But it was 12V and negative ground, it still had a generator, all 22A of it, not an alternator, and a relay-based regulator. Thankfully the wipers, on or off, that was it, no fast/slow or intermittent, were not driven by the manifold vacuum. These vacuum driven wipers went frantically when you were sat at a set of traffic lights and when you really needed them at the breakneck speed of 50mph (80kph) they would almost come to a standstill.
Anyone else remember those? Heck, what we put up with in those days! The Escort also had no radio, 12V on the plates or otherwise, nor even a place to fit one. My fathers first car, a Ford Pop I think, didn't even have a heater...in the UK! Ekkie thump, them were the days!
Steve A.