That is actually a valid question that I have always wondered about.
�Back in the day�, we always thought it was just because Ford and Chrysler wanted to be different from GM so they made all there cars Pos. Gnd. as opposed to GM�s Neg. Gnd.
And that might have been the reason. I don�t know if it was theory or arbitrary.
The military teaches DC Current flows from Pos to Neg, at least they did when I was stationed at Keesler, whereas civilian teaches Neg to Pos.
I was going to go out and switch one of my 6v 300U�s to Neg Gnd just for the fun of it to see if it would still run as good as it does now.
I will never convert one of them until I have a big problem and then I will probably just go with the Bosch VR. But it will also depend on which component I have the problem with.
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Today's Featured Article - Timing Your Magneto Ignition Tractor - by Chris Pratt. If you have done major engine work or restored your tractor, chances are you removed the magneto and spark plug wires and eventually reached the point where you had to put it all back together and make it run. On our first cosmetic restoration, not having a manual, we carefully marked the wires, taped the magneto in the position it came off, and were careful not to turn the engine over while we had these components off. We thought we could get by with this since the engine ran perfectly and would not need any internal work. After the cleanup and painting was done, we began reassembly and finally came to t
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