The Chevy 350 HEI distributor wiring diagram is an important aspect of your vehicle’s ignition system. The High Energy Ignition (HEI) distributor offers improved performance, better reliability, and cleaner emissions compared to the conventional distributor. Properly wiring the HEI distributor is crucial to ensure that your engine runs smoothly and efficiently. In this article, we will explore the Chevy 350 HEI distributor wiring diagram in detail.
Understanding the HEI Distributor
Before we delve into the wiring diagram, it’s important to have a basic understanding of how the HEI distributor works. HEI distributors have two main components – the ignition module and the coil.
The ignition module is responsible for regulating the spark to the spark plugs. It receives signals from the pickup coil and triggers the coil to generate a spark. The coil, in turn, creates the high voltage required to ignite the fuel mixture in the combustion chamber.
Wiring the HEI Distributor
Now that we know how the HEI distributor works, let’s take a look at the wiring diagram. The following diagram shows the standard wiring for a Chevy 350 HEI distributor:
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As you can see, there are four wires involved in wiring the HEI distributor – the two wires from the distributor itself (red and white) and the two wires from the ignition switch (pink and brown).
The red wire is the 12V power supply to the HEI distributor. This wire should be connected to a switched 12V source, such as the ignition switch. The white wire is the tachometer output signal and should be connected to the tachometer input on your dashboard.
The pink wire is the ignition feed wire and should be connected to the ignition switch. This wire provides power to the ignition system when the key is in the “on” position. The brown wire is the start-up wire and should be connected to the ignition switch. This wire provides power to the ignition system only when the key is turned to the “start” position.
Conclusion
Properly wiring your Chevy 350 HEI distributor is essential for efficient engine performance. By understanding the basic principles of the HEI distributor and using the wiring diagram provided, you can ensure that your vehicle’s ignition system functions reliably and cleanly. If you’re still unsure about the wiring process, consult a professional mechanic or refer to your vehicle manufacturer’s service manual.
