What was the real reason for switching from positive to negative ground? I've heard two theories: Fighting corrosion and supposedly improving how spark plugs fire, since the spark could more easily jump from the hotter outer electrode to the cooler center electrode. The latter doesn't make as much sense to me, since the polarity would be determined more by the polarity of the ignition coil's secondary winding.
Just pondering since my MG came from the factory with a negative ground system, but apparently the remnants of positive ground are still there; the negative battery cable is red and the positive cable is black.
Just pondering since my MG came from the factory with a negative ground system, but apparently the remnants of positive ground are still there; the negative battery cable is red and the positive cable is black.