GM HEI Conversion

simman900 said

The engine came with the big GM HEI distributor with the coil in cap. That’s why I was asking about the those wires. The 2 wires that were plugged into the old distributor I believe plug into the Gm hei. One is hot and the other I think is or was a tach. It does have an after market tach.

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see post 27.
the red wire is simply 12V in. Needs it in CRANK and RUN. You will have to tie a blue and brown wire together, unless someone already did that for you.
the green is simply tach output.

If you're talking about the purple and green wires that plug into a stock type distributor, those are NOT your source for a 12V.

BLUE AND BROWN off the ballast resistor are power in crank, and run...those again need "Y'd" together and to run to the 12V on the HEI. unless again...someone already did that for an MSD box or something