How to tell + or - earth?

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How to tell + or - earth?

Postby PHerder » Mon Mar 10, 2008 9:07 am

My 66 Sprite sat in a grainary for ~ 20 years (PO) and the battery is long gone. Is there a simple way to tell if it is + or - earth? I.e. what would tell me if a PO has changed to - earth or left it stock?

When I put a Ohm meter to the coil, I get readings from the coil to the chassis but nothing to the battery wire that is NOT attached to the chassis.

Doh! I just thought that since the key switch is NOT on, I probably will NOT get any reading from the battery to the coil. :roll:

So, the question remains, what to look for?

Paul Herder
66 Sprite
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Re: How to tell + or - earth?

Postby Frogarri » Mon Mar 10, 2008 3:03 pm

If both battery cables are there look at them. One cable end will have a bigger inside diameter than the other.
The positive (+) side is larger than the negative end terminal.
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'61 AH Sprite 'Ole Gray' in "The Healey Book"
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