If you are planning to build a custom vehicle, one of the most important components you’ll need is an ignition coil. An ignition coil is responsible for providing the high voltage needed to ignite the fuel in the engine. In this article, we’ll discuss the 12 volt ignition coil wiring diagram and everything you need to know about it.
What is an Ignition Coil?
An ignition coil is an electromagnetic device that converts the low voltage from the battery into the high voltage needed to ignite the fuel in the engine. The ignition coil is typically located in the distributor of the engine and consists of two coils of wire wrapped around an iron core. When the battery voltage is applied to the coil, an electromagnetic field is created which amplifies the voltage and produces the spark.
The ignition coil is a crucial component in the ignition system of any vehicle. Without it, the engine will not start or run properly. In modern vehicles, the ignition coil is controlled by the engine computer, which regulates the timing and duration of the spark. However, in custom-built vehicles or older vehicles, the ignition coil is controlled by a separate ignition control module or distributor.
12 Volt Ignition Coil Wiring Diagram
The 12 volt ignition coil wiring diagram consists of two primary components – the wire and the transformer. The transformer is a coil of wire that creates the high voltage needed to ignite the fuel. The wire is the conduit between the transformer and the distributor. The wiring diagram is typically included in the installation instructions provided with the ignition coil.
Below is an example of a 12 volt ignition coil wiring diagram:
| Wire | Color | Function |
|---|---|---|
| Primary | Red | Connect to the ignition switch |
| Secondary | Black | Connect to the distributor |
| Ground | Green | Connect to the engine block |
Primary Wire
The primary wire is responsible for supplying the current from the ignition switch to the ignition coil. It is typically colored red and connects to the positive terminal of the coil. The primary wire is a low voltage wire and should be connected to a switch that is capable of handling the current required by the ignition coil.
The primary wire should be connected to the ignition switch, which is usually located on the dashboard of the vehicle. The ignition switch is responsible for turning the ignition on and off, providing power to the ignition system when the engine is started.
Secondary Wire
The secondary wire is the output wire of the ignition coil and is responsible for providing the high voltage spark to the distributor. It is typically colored black and connects to the negative terminal of the coil. The secondary wire should be connected to the distributor cap or ignition control module, which is responsible for distributing the spark to the correct spark plug.
The secondary wire should be routed away from any other wires or components to prevent interference or cross-talk. It should also be securely mounted to prevent any damage or wear from vibrations or movement of the vehicle.
Ground Wire
The ground wire is responsible for providing a ground connection to the ignition coil. It is typically colored green and connects to the engine block or another grounded metal surface. The ground wire should be securely connected and free of any corrosion or damage. A loose or corroded ground connection can cause voltage spikes or other issues with the ignition system.
The ground wire should be routed away from any other wires or components to prevent interference or cross-talk. It should also be securely mounted to prevent any damage or wear from vibrations or movement of the vehicle.
FAQ
What is the difference between a 6 volt and 12 volt ignition coil?
The difference between a 6 volt and 12 volt ignition coil is the amount of voltage they require to operate. A 6 volt ignition coil requires a lower voltage to operate, whereas a 12 volt ignition coil requires a higher voltage. This is important when selecting an ignition coil for your custom vehicle, as the voltage requirements must match those of your engine and electrical system.
What is the maximum voltage output of an ignition coil?
The maximum voltage output of an ignition coil is typically around 50,000 volts. However, this can vary depending on the specific coil and engine application. It is important to select an ignition coil that is compatible with your engine and provides the appropriate voltage output.
Can I install an ignition coil myself?
While it is possible to install an ignition coil yourself, it is recommended to have a professional mechanic or technician perform the installation. This will ensure that the ignition system is installed correctly and that all wiring connections are secure and free of damage or corrosion. A properly installed ignition system is crucial for the safe and reliable operation of your vehicle.
What are some common symptoms of a faulty ignition coil?
Some common symptoms of a faulty ignition coil include rough running or stalling of the engine, difficulty starting the engine, and a decrease in fuel efficiency. If you suspect that your ignition coil may be faulty, it is important to have it checked and replaced as soon as possible to prevent further damage to your engine or electrical system.
How can I test my ignition coil?
There are several methods for testing an ignition coil, including using a multimeter or ignition tester. However, it is recommended to have the ignition coil tested by a professional mechanic or technician to ensure accurate and reliable results. Testing the ignition coil requires specialized equipment and knowledge, and a faulty test result can lead to further damage or issues with your engine or electrical system.
Conclusion
An ignition coil is a crucial component in the ignition system of any vehicle. The 12 volt ignition coil wiring diagram is an essential tool in the installation and maintenance of your ignition system. It provides the necessary information for installing the ignition coil correctly and ensuring that it operates safely and efficiently. By following the guidelines outlined in this article, you can install and maintain your ignition system with confidence.
