needed:: wiring diagram for HEI IGNITION

Here ya go.


The Ignition Coil on your car or truck may have or may not have 3 wires coming out of it. Whether it does or doesn’t doesn’t matter... the info in this test article still applies. Below are the descriptions of what each circuit does. Each circuit is identified by a letter, and this is the same letter that you will find on the Ignition Coil’s connector.

1. Circuit labeled A -Pink Wire:
   1. Power (12 V) Circuit.
2. Circuit labeled B -White Wire:
   1. Tach Signal for the Tachometer in the Instrument Cluster if equipped.
3. Circuit labeled C -White with Black stripe Wire:
   1. Switching Signal Circuit. This wire (circuit) comes from the Ignition Module.

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