3010 Positive/Negative Ground.... ?

tactical219 · Apr 30, 2018

I've owned my JD 3010 gas now for 3 years, its the 12v system with a battery disconnect switch mounted on the dash. So since I use the disconnect switch and hadn't had any issues with the battery since I purchased it i never opened up the box to check on the battery. Last week i went out to fire it up and the battery was dead (forgot to kill the switch), anyway i popped open the battery box and noticed that it was set up with the Positive cable going to ground and Negative to the starter. From everything i've read online that is incorrectly bass akwards.
My question being, i'm going to assume since the battery is 5 years old the guy who owned it before me installed it wrong and its been running that way, and running fine that way ever since. so 2 questions:
1: whats the potential damage of running with the positive grounded? seeing as how its been like that for many hours, does it really hurt anything?
2: the 3010 12v is truly a negative ground system correct?

thanks guys

Mike M · Apr 30, 2018

That machine would be a positive ground just like you found it.

John T · Apr 30, 2018

Some early new generation gas tractors were still at POS Ground I believe as long as they still used Generators versus Alternators. I would NOT assume it was wired incorrectly. I would NOT assume the guy who owned it before wired it wrong. Hey if to worked fine for 3 years you may just try to charge the battery n see what happens ??????? If all was well it shouldn't discharge even without a kill switch, that may need looked at as well.

BUT if it has an Alternator instead of a Generator all bets are OFF as most of those require NEG ground, but still if it kept the battery charged 3 years it must have been charging.

Try to charge the battery and leave it alone would be my first thing.

John T

3010 Positive/Negative Ground.... ?

tactical219

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Mike M

Well-known Member

John T

Well-known Member

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