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Has anyone used an Oscilloscope to determine the pulse speed of a Ford gauge at lo-mid-hi positions? I'm just curious.
Not a resistance direct current system, the Ford gauge isn't an alternating current system either. Information really depends upon the on-off pulse ratio not the pulse rate.
Sender open/pulses mostly off - gauge is at maximum.
Sender pulses mostly on - gauge is minimum.
Pulsing - gauge reads pulse off/on ratio.
I do find it interesting how the similar temperature coefficient of both sender and gauge work to cancel each other resulting in a system quite accurate across a wide ambient range.
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