The late 80's had the switch in the middle of the dash, but it was a rocker switch that does'nt stick out very far....
Look to see if the rod is bent, ck clutch linkage to see if bushings are in good shape and properly lubed, should be a zerk fitting. And I would...
Late 70's or early 80's 1/2 ton model called BIG 10, Of the twelve to fifteen I've seen all had factory tachs. carryall
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