There wasn't an ammeter. Besides an ammeter is NOT voltage sensitive and a voltmeter is a useless gadget that gives no useful information.
All the accessories and lights ran on 12 volts, some on plus 12 volts, some on -12 volts because the battery center was grounded.
Yah, you need a new alternator or generator when changing from 24 to 12 volts. Its in the kit that Deere will happily supply.
Sometimes the fuel gauge set up for -12 volts reads differently on +12 volts. But it does work. I changed my gas 4020 from positive to negative ground and the fuel gauge still works.
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Today's Featured Article - The David Brown Rose Badge - by Samuel Kennedy. In the 13th century civil war was raging in England. Two English noblemen were involved in a conflict which became known as the War of the Roses. The Duke of York had as his emblem a white rose and the Earl of Lancaster had a red rose. Today the white rose is the official emblem of the county of Yorkshire and the red rose has been adopted by the neighboring county of Lancashire.
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