Early GM ignition coil?

[Red88Carrera]

I want to use this ignition coil on a project and need to know which 2 of the 4 terminals go to the primary. Anyone have a link with the info? It's from a 1977 Chevy Nova I-6 250 motor. Thanks.

[Scott R]

This should do it:

[Red88Carrera]

Thanks for the diagram. It shows me the wiring of the coil, but doesn't tell me which terminal is which. Nothing is marked on these coils. I'm using it to put an HEI ignition on my golf cart.

[Scott R]

Sorry, here is a better reference. Had to find my camera. The rounded part of the solid coil plug is on the top for reference. The one in your picture would have the rounded edges at the top as well.

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C TACH


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+ IGN

[Red88Carrera]

Thanks Scott R. I thought they were 4 separate terminals. I didn't realize they were connected internally.