1972 Chevy Nova Ignition Switch Wiring Diagram

By | July 11, 2022



The 1972 Chevy Nova has a standard wiring diagram for its ignition switch—but it can be a bit of a challenge to understand and properly install. The diagrams can appear confusing, since they include a lot of information and detail. But, once you understand the basics, it isn’t hard to find the right connections and get your car running!

When installing a new ignition switch, it’s important to start by gathering all the necessary components. You’ll need the ignition switch itself, as well as a wiring harness, relays, connectors, and other parts to ensure everything works correctly. Once this is done, it’s time to refer to the wiring diagram to determine which wires connect to which parts of the switch.

For a 1972 Chevy Nova, the ignition switch has three terminals: ‘S’ for the starter, ‘I’ for the ignition system, and ‘G’ for the ground. The ‘S’ terminal is connected to the solenoid control terminal and the ‘I’ terminal is wired to the ignition coil. The wire from the starter solenoid should be connected to the ‘G’ terminal so that it provides power when the switch is turned on.

In addition to the switch wiring, you may need to make modifications to the starter circuit. This usually involves connecting the ‘S’ terminal to the ignition side of the starter solenoid. This part of the wiring procedure is especially important to ensure that the car starts reliably.

Once the wiring is complete, it’s essential to double-check each connection and make sure that everything is properly installed. After this, you’re ready to test the ignition switch. Try turning the key several times and confirm that the engine starts and runs properly.

Installing an ignition switch for a 1972 Chevy Nova might seem like a daunting task, but it’s really not that difficult. With the right diagrams and materials, you’ll have your car up and running in no time. And with a little understanding of the wiring, you’ll be able to confidently handle any electrical repairs or modifications.


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