You ALWAYS charge a battery with POS from charger to POS on Battery and NEG from charger to NEG on battery REGARDLESS. Think about it, the battery or charger dont care that one of the battery terminals happens to be bonded to some huge hunk of old iron..........SAFETY NOTE its safer to make the last connection AWAY FROM the battery top where explosive gases may be present. IE If the tractor is Pos ground you could use the tractors iron frame as a substitute for the batterys POS post or vice versa for Neg ground.
Similar, if you use jumper cables its still POS to POS and NEG to NEG. If the tractor is Pos ground and the truck is Neg ground and youre jumping DONT LET THE TRUCK FRAME/BUMPER CONTACT THE TRACTOR
Also a tractor genny can charge at EITHER Pos or Neg ground once properly polarized.
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Today's Featured Article - The Day Mom Drove the 8N - by Brian Browning. My Dad was wanting to put in a garden but couldn't operate the 8N and handle the old horse drawn plow he had found and rigged up to use with the tractor. Well, he decided to go get Mom out of the house and have her drive the tractor while he walked behind the plow. You got to understand that while my Mom is a hard worker who will always help whenever she can... she had never operated farm machinery before that day. Dad got her out there, explained how the clutch was the same as in our o
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