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: Fordson Major - by Anthony West. George bought his Fordson Major from a an implement sale about 18 years ago for £200.00 (UK). There is no known history regarding its origins or what service it had done, but the following work was undertaken alone to bring it up to show standard. From the engine number, it was found that this Major was produced late 1946. It was almost complete but had various parts that would definitely need replacing.
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