instrument cluster question

I might be wrong but I think 76 model was one year only different from what we are accustomed to. This ALT' gauge used a remote shunt which deleted those 2 big wires with ring terminals on the gauge. This inst' panel used that ground spade on the headlight switch too ( had a ground wire attached to it ). We can say chassis ground is not the fault though since neither of the two instruments in question require a chassis ground.