Re: SMTA Postivie Ground + and -'s

Posted by Bob M on March 01, 2007 at 19:17:02 from (69.205.124.61):

In Reply to: SMTA Postivie Ground + and -'s posted by sflem849 on March 01, 2007 at 18:21:54:

There's no empirical evidence that suggests positive ground is better than negative - or vice versa. Your tractor will start, run and develop the same power grounded either polarity.

Reason many prefer to set up their old tractors for negative ground now is neg ground has been the the automotive standard since the late 1950's. And when you are jump starting a tractor from a car or pickup, it's a bit less taxing mentally if both are negative ground.

Also positive ground alternators are virtually non-existent. So tractor alternator conversions are almost ALWAYS neg ground.

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When jumping your tractor from a neg grounded vehicle forget about the ground polarity. Just do two things:

1 - Make sure the tractor and jumping vehicle are not touching.

2 - Make jumper cable connections battery + to battery + and battery - to battery - . For safety make the - jumper connection at the jumping vehicle last, and presuming the vehicle is neg ground make the connection to the frame or engine block, not directly to the battery.

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