Re: Can a 77 Tach cluster be used in a 76
From what I have seen, there were 2 cluster styles used for 76.
The early ones had a single "brake" warning light at the bottom of the speedometer and a single "fasten belts" indicator light at the bottom of the tachometer.
The later ones had wider "windows" at the bottoms of the speedometer & tach giving room for 2 indicator lights at the bottom of each. If your 76 has this later style, it is identical to a 77 cluster that has a mechanical oil gauge.
If your 76 has the earlier style, the late-76 / 77 style cluster will still work if you swap the flexible printed circuit. Or make a minor re-pin change to the cluster connector ta account for the slight differences in the "brake" & "fasten belts" lights.
Another alternative you might want to consider is repairing the existing cluster housing. If the rest of the plastic isn't deteriorated, you might be able to cut that high beam indicator section from a junk donor housing and glue it into yours. I've had good results using Permatex Plastic Welder epoxy for these type of repairs.
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