There really wasn't a standard until the '60's, though most US manufacturers standardized on negative ground in the 50's. Other manufacturers in the rest of the world, most notably the British, kept positive ground until the mid-60's.
You can't always rely on the color of the cable, particularly if someone has replaced the cable.
All batteries are marked with a '+' and '-' next to the respective posts. On top post batteries the positive post is larger than the negative post.
For some reason side post batteries have the same size terminals so you have to rely on the markings.
If the car is newer than a '75 it's definitely a negative ground.
__________________
Tom Rowe
Four wheel drive allows you to get stuck
in places even more inaccessible.
62 88 reg
67 NADA x2
74 Air Portable - The Antichrist (tag 6A666)
95 D1 - R380
95 D90 - R380
97 D1 - ZF
Last edited by antichrist; 07-24-2011 at 08:01 AM.
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Positive ground system or Negative ground system on the P38 02 RR 4.6?
