GM 4-Pin HEI Electronic Ignition Control Module Wiring Connections/Diagram with the Cube-Shaped 3-Wire Inductive Proximity Sensor This ignition system operates with full 12 volts. This is a thoroughly tested, researched and proven reliable ignition system invented by Brian Miller for ordinary lawn & garden engines and competition pulling engines. With most tractors, the ignition conversion can.. Find out how to wire an HEI ignition system with a comprehensive wiring diagram. Learn step-by-step instructions and diagrams to help you install and troubleshoot your HEI ignition system.
Clear wiring diagram for HEI distributor showing proper connections and color codes to help with installation and troubleshooting ignition systems.. Connect the ignition coil negative (-) terminal to the [C] terminal on the module. For competition pulling - if the grounding-type killswitch is used, connect the ungrounded wire from the killswitch to this terminal.