TC - If the generator is keeping the batteries charged you can leave your grader connected negative ground. All you need do is reverse the connections at the ammeter - it will then read correctly.
Alternatively you can swap the grader back to positive ground. To do this first swap the battery terminal connections. Then repolarize the generator (with the engine off, momentarily jumper the BAT and GEN terminals at the regulator).
My recommendation is leave your grader negative ground. Having it neg ground lessens the chance of a mistake should you ever need to jump start it from a negatively grounded vehicle (which virtually all modern vehicles are...)
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Today's Featured Article - Tractor Profile: Allis-Chalmers WD45 (Gas Version) - by Staff. Beginning production in 1953, the WD45 had the same general look as the WD tractor which was produced earlier - but was much more powerful. This was due to the new 4-cylinder "Power Crater" gasoline engine with a 4 x 4-1/2 inch bore and stroke. Some people feel this was one of the most significant tractors offered by Allis-Chalmers in those days. Nothing in its weight or power class could match its performance. In 1954 they began offering the WD45 with the new "Snap-Coupler&quo
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