I found my problem! RustyPile chimed in on a private thread and helped me out.
I was testing my ceramic resistor on the back of the gauge with it installed. I did not realize I should be testing it off the gauge. My ohm reading of the ceramic resistor was actually the reading the resistance of...
I only have some 91 ohm resistors. I do not have a potentiometer or a decade box.
I'll have to try checking sensor and gauge by applying air. I have not done that yet.
What about the no fluctuation when under a load or different rpms?
Yes. Gauge goes to zero with the engine off. Stays steady at 15 while running.
And yes I did that. When I unplug the wire at the sender the gauge pegs. Ground it and it drops to zero.
Yes it has 3 wires. +, -, and sensor
Looking for some input on my oil pressure gauge. I've found a ton of information on the sight here and used it for trouble shooting. But I still can't get it working.
I have a 83 C10 that I acquired in pieces. Original SM 465 Transmission. Swapped in a crate 383 and all new Painless wiring...
I have a 1983 C10 (Single square headlight) that I acquired completely in pieces. It was tore down to the frame by the previous owner and he began a restoration before he ran out of money/steam.
This is my first C10 ever and I'm learning as I go. I have managed to find info or figure it out...