We've included a simplified wiring diagram to ... the basics of how the GM HEI module is triggered, and then you can work out the details as far as factory connectors, coils, and so on.

Coil pack harness covers—next level wire looms, if you will—which is exactly what our Tech Center's Installation Jason came up with for the LS in his 1956 Chevy Stepside. See All 23 Photos ...