Turns out that '71-72s have a single rgeostat while later ones have two. My SEpt 72 dash is drilled for the second rheostat but....
Its also entirely possible the speedo & tach bulbs are burned out or missing. The stock bulbs are all-glass 2-watt units, and it works much better on most cars to use 5 watt replacements, available anywhere. Take the removeasble sockets into Kragens for a fit-check.
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