Re: Positive ground..?!

Posted by Red Dave on January 27, 2002 at 19:14:37 from (63.38.168.14):

In Reply to: Positive ground..?! posted by Bill in the South on January 27, 2002 at 18:55:57:

It works just like a negative ground system - just oposite polarity. If it's working OK there is no good reason to change it.
6 Volt systems are more sensitive to problems with high lead resistance and poor connections. Most stock 6 volt tractors will work just fine on a 6 volt, positive ground system, if they get a little basic routine maintenance like tune-ups and cleaning battery terminals.
Where the 6 volt systems are weak is on bigger tractors, with larger engines, especially when they are overhauled with overbore kits and higher compression ratios. 12 volts is just more efficient at delivering enough power to the starter at these higher load demands.
If you change to a 12 volt alternator system you are usually forced to change over to negative ground since alternators tend to be negative ground.
Some people get all worked up over this question, but there is no electrical advantage in either positive or negative ground, one is as good as the other.

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