Posted by Steve@Advance on June 28, 2014 at 20:01:57 from (107.203.134.67):
In Reply to: Negative gounding posted by SWH1 on June 28, 2014 at 19:34:53:
Positive ground or negative ground refers to the battery connections.
Looking at the battery posts, if the larger, "+" post is connected to the grounded cable (the one bolted to the engine block or the sheetmetal), it is a "positive ground".
If the smaller, "-" post is connected to the block or sheetmetal, it is a "negative ground".
If the battery has been removed, and the polarity is not known, you can usually tell by looking at the coil connections. If the "-" terminal is connected to the ignition switch, and the "+" terminal is connected to the points, it is a positive ground. There may also be markings on the regulator refering to the polarity.
Most positive ground systems are limited to the older 6 volt systems.
If the generator has been replaced with an alternator, it will be a negative ground.
(There are a very few exceptions to this though! Some factory alternator systems are positive ground. If in doubt check the manual, connecting an alternator equipped system backward will cause damage.)
Connecting a generator equipped system backward should not cause damage, but it will not charge properly.
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