Why 10.7 volt input at ‘71 Duster instrument panel?

Dana67Dart said
Price seems good to me.

Are the 2 screws on the back of the Speedo snug?

Are the rubber insulators on those 2 screws intact, m?

Both screws seemed snug but one turned a few degrees with light screwdriver pressure. The rubber gasket under that screw looks like it is split - but nothing wiggles when I apply force to the speedo connection.