instrument cluster question

RedFish said

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.

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I b'lieve you are right on the ammeter. some of the big boats used that remote shunt a few years earlier. So far as the ground, the IVR needs a ground depending on "what he has." Not sure if the old mechanical oe had to be grounded to operate or not

Here is a darn poor scan I did of the 76 wiring.........

Free service manuals

www.letsgocomputers.com/docs/76wiringAbody.pdf