Why 10.7 volt input at ‘71 Duster instrument panel?

Thanks RedFish… I will purchase and replace the isolators. I just took each screw off and the “missing” washer was actually pressed down into the hole and hard as a piece of plastic. The other washer that was split broke when I removed it and it too was hard. Too bad that Mopar couldn’t supply rubber washers that would stay soft for 52 years.