Jim DeClerck
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Trouble. I installed the instrument panel in the car and ran it but the tach is not responding. verything else works. I have 2 spare tachs from the PO and would like to check them while running the engine, but before I tear out the instrument panel again, can I connect the a ground to one of the tach retaining screws and 2 - 3 of the other plugs to components under the hood with clips on wires and expect a tach to operate? There are 3 wires, white w/gray stripe, white and green connected to plugs in the back of the tach. Where do these connect under the hood? I tried to trace them on the wiring diagram but haven't had much luck. The car is equipped with a Pertronics unit in the distributor.
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