65 Valiant now gauges go full when ignition key turned or running

I'm going today at least try the gauge test today if I can find a radio shack still open. They're all out of business here. I found two more original voltage limiters off of two clusters I have for my 73 charger. Now I have 2 solid state limiters and 3 original limiters. Out of they all can't be bad. I will try the pulse test too but I have a digital voltmeter. I also found a spare 65 valiant circuit board which I've suspected all along but haven't tested. I think I'm going to swap the boards since it shouldn't take more than 30 minutes. I really hope I can locate the resistors today to test these gauges.