Voltmeter Behavior, Verify Accuracy Options

[Superhawk996]

Starting a new thread in response to @emeryGT 350 comment in another thread as follow up

Here’s the background:

[emerygt350]

I finally dug into the console. I had compared the voltage on the dmm at the gauge to the battery, and they were off. The gauge was showing pretty close to what it was getting. The DACO has wired his Autometer AFR into the same relay controlled circuit as the gauge, so the gauge is not alone on that circuit (completely forgot). It's the damn O2 sensor heater. A little tiny 20 gauge or less wire takes a big hit while the sensor is heating. Disconnected the AFR and all was good.