Wiring Diagram For Hei Distributor: A Comprehensive Guide

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Chevy Hei Distributor Wiring Diagram Fuse Box And Wiring Diagram

Installing a new distributor in your classic car or truck engine can be intimidating if you don’t have the right information. If you’re looking to install a high-energy ignition (HEI) distributor, you’ll need a wiring diagram to ensure that all the components are connected properly. Read on to learn more about HEI distributors and how to wire them.

What is an HEI Distributor?

HEI stands for high-energy ignition and is a type of distributor cap and rotor set that offers improved spark delivery and increased efficiency. An HEI distributor includes a module and coil combination that is connected to the spark plugs and spark plug cables. The module sends out an electric signal and the coil amplifies the signal to generate a spark. This spark is then sent to the spark plugs and is used to ignite the fuel and air mixture in the engine.

How to Wire an HEI Distributor?

The process of wiring an HEI distributor is relatively simple and straightforward. The first step is to connect the positive and negative terminals of the HEI module to a 12-volt power source. Once the power source is connected, you can then connect the spark plug wires to the distributor cap. When connecting the spark plug wires, it’s important to follow the firing order of the engine. Once all the wires are connected, you can then start the engine and check for any issues. If everything is working properly, the HEI distributor should be able to provide improved spark delivery and increased efficiency.


Installing an HEI distributor in your classic car or truck engine can be a great way to improve performance and efficiency. By following the steps outlined above, you can ensure that your HEI distributor is properly wired and that it can provide the improved spark delivery and increased efficiency that it promises. With a properly wired HEI distributor, you can enjoy improved performance and improved efficiency in your engine.