Originally Posted by pgandw
Ground is the same as negative in 12V systems. Only exception I know of is electrics by Lucas aka Prince of Darkness. Early MGs used Lucas and had positive grounds.
That is because this was built in the UK and they drive on the wrong side of the road!
I had a friend who had a TR3 built in the fifties that needed to be re-wired. He bought this from someone who had stored the car in a barn and the rodents destroyed the wiring. This took us along time to get it correctly wired because he insisted on a negative ground like his dads American made car. I spent hours at the local library reading up on wiring British built autos in the fifties to get it right.
2016 34RL CC; 2008 Ram Mega Cab 2500HD, 6.7L, 68RFE 6 speed, 4X4, Smarty S67, TDR 135K+miles