Below are the following diagrams for the 1993-1994 models V6 Mx6, 626 and Ford Probe.  If you are going to keep the stock internal coil, you will only need an HEI unit and follow the diagram, nothing else is needed.

If you are using an aftermarket coil, you will also need a 1k ohm resistor to solder inline for the stock tachometer. Failure to use this resister may ruin the stock tachometer.

The aftermarket coil shown in the diagram is for wiring reference only. Any type or brand of coil may work, commonly the MSD blaster 3 series is most used for this application.

HEI Only

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HEI & Coil

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