[/quote]If I were you, I would not open another can of worms by trying to switch ground polarity. I and others can do it without incident, but many will ruin regulators in trying. "If it aint broke, don't fix it until you achieve broken." I doubt that your fuel gauge is polarity sensitive. I would get the gauge & sender out on a wood bench and do do some testing.[/quote]
I have tested on a bench. The old gauge had 2 terminals. Battery and Tank. I assume it grounded thru the mount. The aftermarket gauges have 3 terminals Battery, Tank, Ground.
The sending unit ohms out thru the wire to the negative on the battery 74 ohms the same as directly to the sending terminal and sending mounting plate. I believe the sending unit is good.
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Today's Featured Article - Harvestin Hay: The Early Years (Part 2) - by Pat Browning. The summer of 1950 was the start of a new era in farming for our family. I was thirteen, and Kathy (my oldest sister) was seven. At this age, I believed tractor farming was the only way, hot stuff -- and given a chance I probably would have used the tractor, Dad's first, a 1936 Model "A" John Deere, to go bring in the cows! And I think Dad was ready for some automation too. And so it was that we acquired a good, used J. I. Case, wire tie hay baler. In addition to a person to drive th
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