Repairing Temp. and Fuel gage Indication on a 1969 Dart Swinger 340

Cubzy said
I’ve removed the IVR. Is there any way to bench test it? I’m getting continuity between all three pegs. There was a wire also stabbed into one of the holes with the tab. I think it was the ignition slot. Is this the 12v supply in? I tested wire with ignition on and didn’t get any voltage? Maybe wire feeding cluster has no power? Can someone tell me which each tab is? Introl tab/ignition tab and large tab on side? Thanks again.View attachment 1715171785

I cant recall, for 100% for sure, but I believe the wire you speak of was a ground wire.

I think the 3 prongs represent

12 volts in
5 volts out
Ground

Seems to me if you get continuity between all 3 prongs you have a switch that has failed in the closed position and will deliver 12 volts to the gauges.

Someone smarter than me will tell you if I am stupid.