Gauges go to full tilt!?!

66fyssh said

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.

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So I too have an aftermarket sending unit in the fuel tank. (Tanksinc with pump in the tank for fuel injection) the first 300 miles it worked great. Spot on. Now it’s pegging all gauges (except amp) to fill tilt.
I want the ivr from the place in AZ - all digital but the 66 barracuda one is different than the ivr-3 or 4 even though I think I can make the ivr-3 work with the 66 barracuda dash.