Gas gauge calibration unit
At this point I am not going to disassemble the cluster to see what voltage that is.
Of course each car is likely to "want" different, and that's the whole point. All I was saying is we probably don't really know "what they started with."
Even though the original pulsing IVR was crude, it HAD to have had a design target, IE duty cycle equating to some RMS
By the way, guys, Ford, and I don't know who else also used these pulsing "regulators". I can still remember, "one fine day" starting up my '60 Ferd Falcoon and having the gauges "both" peg. The mighty, 144 CID 85 hp six. With the integrated head/ intake. A glass bowl on the "huge" single barrel Holley. And a GENERATOR, gasp.
(And a heater that constantly plugged, making the trip into and back from Spokane one Jan day an ordeal in survival to take my Navy entrance physical. Jan?? 1967!!!!)