How to Wire a 1966 Impala with HEI Distributor: A Comprehensive Guide

Are you a proud owner of a 1966 Impala looking for a reliable wiring diagram for your car’s HEI distributor? Look no further! Our guide will provide you with step-by-step instructions, tables, and FAQs to ensure that you can wire your Impala with HEI Distributor quickly and effectively.

What is an HEI Distributor?

Before we dive into the wiring instructions, let’s first understand what an HEI Distributor is. HEI stands for High Energy Ignition, and it is a complete ignition system that was introduced by General Motors in the mid-1970s. It replaced the outdated points-and-condenser system of the time, providing a more reliable ignition system.

The HEI distributor combines the ignition control module, the coil, and the distributor cap and rotor into one unit. This means that instead of having separate components, you have a single unit that is easier to install and less prone to failure.

Benefits of an HEI Distributor

The HEI distributor offers several benefits, such as:

Benefit Explanation
Improved performance The HEI ignition system provides a more consistent and powerful spark, resulting in improved performance.
Easy to install The HEI distributor combines several components into one unit, making it easier to install.
Reduced maintenance The HEI distributor is less prone to failure, reducing the need for frequent maintenance.

Wiring Diagram for a 1966 Impala with HEI Distributor

What You’ll Need

Before you start wiring your Impala with an HEI distributor, you’ll need the following:

  • HEI Distributor
  • Ignition Coil
  • Ignition Control Module
  • Distributor Cap
  • Distributor Rotor
  • Spark Plug Wires
  • Wire Cutters
  • Wire Strippers
  • Electrical Tape
  • Wiring Diagram

Instructions

Here are the step-by-step instructions for wiring your 1966 Impala with an HEI Distributor:

Step 1: Disconnect the Battery

Before you start wiring your car, it’s important to disconnect the battery to avoid any electrical accidents.

Step 2: Remove the Old Distributor

You’ll need to remove the old distributor before you can install the new HEI distributor. Refer to your car’s manual for instructions on how to remove the old distributor.

Step 3: Install the New HEI Distributor

Follow the instructions that come with your HEI distributor to install it in your car.

Step 4: Wire the Ignition Control Module (ICM)

The ICM is a small module that controls the ignition timing. You’ll need to wire it to the distributor and the coil following the wiring diagram.

Step 5: Wire the Ignition Coil

The ignition coil is responsible for producing the high voltage needed for the spark plugs to ignite the fuel. You’ll need to wire it to the ICM following the wiring diagram.

Step 6: Wire the Distributor Cap

The distributor cap directs the high voltage from the coil to the spark plugs. You’ll need to wire it to the distributor following the wiring diagram.

Step 7: Wire the Spark Plug Wires

The spark plug wires deliver the high voltage from the distributor cap to the spark plugs. You’ll need to wire them to the distributor cap following the wiring diagram.

Step 8: Reconnect the Battery

Now that you’ve wired your car with an HEI distributor, you can reconnect the battery and start your car.

FAQs

Q: What is the difference between an HEI distributor and a points-and-condenser system?

A: The main difference is that an HEI distributor combines several components into one unit, making it easier to install and less prone to failure. It also provides a more consistent and powerful spark, resulting in improved performance.

Q: Can I install an HEI distributor in my 1966 Impala myself?

A: Yes, you can install an HEI distributor in your car yourself. However, it’s important to follow the instructions carefully and ensure that you have all the necessary tools and equipment.

Q: Do I need to adjust the ignition timing after installing an HEI distributor?

A: Yes, you may need to adjust the ignition timing after installing an HEI distributor. You can refer to your car’s manual for instructions on how to do this.

Q: What should I do if I encounter any problems while wiring my car with an HEI distributor?

A: If you encounter any problems, it’s best to consult a professional mechanic or refer to your car’s manual for troubleshooting tips.

With these instructions, wiring your 1966 Impala with an HEI distributor should be a breeze. Remember to follow the wiring diagram carefully and ensure that you have all the necessary tools and equipment. Happy wiring!