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Tach hook up


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I snagged a tach at a flea market for $5. It is a Sun model FZ-58NB. Two screws on back for connecting. One says "ign sw" and the other says "dist". To hook this up to an HEI distributor does the DIST connect to the TACH terminal on the distributor cap? Where does the other connect? I've tried hooking it to the "coil -" and "ign +" with the appropriate ground but it doesn't seem to work. Perhaps the tach itself is screwed.

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Hook the "Dist" wire to the "tach" hook up. You may want to get a stock style connector for it and splice into the connector. The "ign sw" wire is the power wire. If you hook it to the ignition switch it will have power when the car is on. Any circuit that has power when the key is on will do.

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