How to wire up HEI modules All five explained with diagrams GM distributor 3 4 5 7 pin Ignition coil

HEI ignition modules explained with wiring diagrams! How they were originally used and rewiring these for performance applications. These modules can easily be used on any distributor with a magnetic pickup coil. Easily add a knock sensor to a regular carbureted engine. Prevent damage to your engine from pinging knocking preignition and detonation. How to easily change timing five degrees on the go without retiming the distributor with a timing gun. How all the modules can operate like a regular 4 pin module. How to use these modules on a points distributor to make points last 5 times longer.