Fuel Gauge Sending Units compared

I overkilled my resisters at 100W power resistors.

UH UH UH!
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Reality... gauges run at ~6V but your point is well taken

Well, I suppose it is a matter of interpretation, with the original regulator, it was a pulsed 12v, so 12 for awhile then 0 for awhile, so it averages to about 6. Math is still good, but only while it is at 12v. So on the average, you would be correct.