You ask...."is this a negative ground or positive ground "
THE ANSWER YES
The starter and charging system are two wire 24 volt ISOLATED from frame ground devices.
The starter has 2 posts, one wires to one battery, the other connects first to the solenoid then (when its closed via the solenoid) to the - of the other battery i.e. 24 volts isolated from ground operates starter.
Approximately half the 12 volt lights are fed from one battery (at + ground) while the others are fed from the other (at - ground)
The mid center tie point where the batteries join in the middle (+ of one to - of other) is tied to frame ground i.e. one battery is Positive grounded 12 volts while the other battery is - grounded 12 volts..
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Today's Featured Article - Restoration Story: 1964 JD 2010 Dsl - Part 2 - by Jim Nielsen. Despite having to disassemble the majority of my John Deere 2010's diesel engine, I was still hopeful I could leave the engine-complete with crankshaft and camshaft-in the tractor. This would make the whole engine rebuild job much easier-and much less expensive! I soon found however, that the #4 conrod bearing had disintegrated, taking with it chunks of the crankshaft journal. As a resul
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