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 08-06-2000, 22:47 Post: 18559
Mike Maier



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  positive battery ground

I went to start and Ford 900 that I was thinking about buying and I noticed it had a positive grounded battery. It has a four cylinder gasoline engine. Is the battery hooked up right?






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 08-06-2000, 23:19 Post: 18562
richard james allen



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  positive battery ground

I have a 52 Ford 8N and the battery is grounded off the positive. From what I was able to find out, this was a common setup for these tractors. This system is 6V and some people have converted their tractors from 6V to 12V. Mabey the reversed polarity is due to the 6V setup?






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 08-06-2000, 23:39 Post: 18564
Roger L.



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  positive battery ground

Yours is hooked up right. JD also used positive ground at the time. I'm looking at the Ford manual, and the Ford 2N,8N, and 9N was also originally positive ground. As far as I can tell, which terminal to run to ground depends on which technical philosophy has the upper hand at the time. Somehow it seems refreshing to me when the eggheads can't even agree on such a simple thing!! At the time when most industrial and ag machinery was positive ground, the American automobile industry was negative ground. Go figure.....
If you want to do so for some reason, you can reverse the battery polarity on most if not all old brush type generator and voltage regulator system. Both 6 and 12 volt. I've done it and so have lots of others. It does require figuring out what and why to re-polarize.






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 08-07-2000, 07:47 Post: 18573
Bird Senter

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  positive battery ground

Are you old to enough to remember when Chrysler product cars had a positive ground? I can't remember when they changed to a negative ground, but the early 50s had the positive ground (I'll probably always remember because I installed a new battery backwards in one).






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 08-07-2000, 16:07 Post: 18588
Bud



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  positive battery ground

Bird I'm with you on the Chrysler products. My Dad had a 1937 dodge and the positive battery post was grounded. The bad part of the whole deal was getting to the battery under the front seat. I think Chrysler is trying to relive the old days on some of their new models. They are hiding the battery.
Bud






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 08-07-2000, 17:26 Post: 18589
Bird Senter

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  positive battery ground

Bud, I haven't look at any of their new ones lately; didn't know they'd gone back to hiding the battery, but the first car I can remember of my parents' was a 1936 Plymouth coupe. But the one in which I ruined a battery by hooking it up backwards was a 1953.






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 08-07-2000, 23:07 Post: 18606
Roger L.



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  positive battery ground

Right! I had forgotten about the the "battery under the seat" trick. I had a jeep that was built that way....and my JD still has the battery under the seat today. Frankly, I like it there a lot better than having it in front of the radiator like is so common on compacts. The "weird battery" prize in my garage was won by a 1958 MGA that not only had the batteries under the seat...they were under the rear seat! That's right, it had a 12 volt system composed of two six volt batteries in series. Being British it was positive ground, too! Second prize would have to go to a venerable 48 Hudson belonging to a friend...it had an 8 volt battery which was not uncommon at the time....but I forget which pole was grounded.






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 00-00-0000, 00:00 Post: 18610
T-ROCK



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  positive battery ground

Bud, when I was at a Chrysler new car announcement meeting a couple of years ago, they said they were actually including the battery in the equation for impact or energy absorption when they engineer the new vehicles. I asked them if they were worried about the amount of corrosion on the terminals, and their response was "better to save a life than a couple of cheap battery terminals". That is true, but for us in the dealership, those batteries are a bear to replace! Just my 3 cents worth






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 08-08-2000, 12:37 Post: 18624
Art White



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  positive battery ground

From what I have seen all 6 volt systems are positive ground and all 12 volt systems are negative ground. That relates to IH tractors and the older cars I have had. Don't ever remember running into anything else for the other makes I've had experience with.






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 08-08-2000, 13:59 Post: 18625
Bird Senter

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  positive battery ground

Hmmm, Art, you could be right; I'm getting older and my memory may not be what it once was, but I don't remember the old GM and Ford 6 volt cars being a positive ground; I THINK they were negative ground. But of course it's been over 40 years since I worked in my Dad's service stations, so I can't swear to it.






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Discussion Boards > Active Subjects > Messages as Posted > Tractor Engine Repair Rebuild Forum

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