Gauges go to full tilt!?!

RustyRatRod said

Oh, my bad. Our systems aren't the same, either. I thought they were. I'm sorry. The 64 voltage regulator is integral with the fuel gauge, instead of separate like yours. I'm sorry about that.

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Rusty, 66 is still internal. Not sure when it was changed.

I removed the IVR and installed a digital regulator. It sorta works now, but I have an aftermarket sending unit so the fuel gauge is off.

Edit:. Just saw he posted it has a new dash voltage regulator. Maybe it's bad.