If you’re working on your car’s electrical system, you may need to know how to wire a 5 pin ignition switch. Ignition switches are an important component of the electrical system that provides power to the engine and other critical systems. In this article, we’ll walk you through everything you need to know about a 5 pin ignition switch wiring diagram.
What is a 5 Pin Ignition Switch?
An ignition switch is a mechanical device that takes an electrical signal from the key and turns on the engine by sending power to the starter motor, fuel system, ignition system, and other systems. A 5 pin ignition switch is a type of ignition switch that has five electrical connections.
The five terminals on a 5 pin ignition switch are typically labeled as follows:
| +12V | Ignition | Accessory | Starter | Ground |
Terminal 1: +12V
Terminal 1 is connected to the positive side of the battery and provides power to the ignition switch. This terminal is always hot and provides constant power to the switch.
Terminal 2: Ignition
Terminal 2 is connected to the ignition coil and provides power to the coil when the key is turned to the ‘ON’ position. This terminal is also used to power other ignition system components, such as the distributor, spark plugs, and engine control module (ECM).
Terminal 3: Accessory
Terminal 3 is connected to the accessory circuit and provides power to non-critical electrical systems, such as the radio and interior lights. This terminal is also used to power the ECM in some vehicles.
Terminal 4: Starter
Terminal 4 is connected to the starter motor and provides power to the motor when the key is turned to the ‘START’ position. This terminal is also used to power the fuel pump and other critical engine systems.
Terminal 5: Ground
Terminal 5 is connected to the ground circuit and provides a path for electrical current to flow back to the negative side of the battery. This terminal is also used to ground the ECM and other electrical components.
Wiring a 5 Pin Ignition Switch
Wiring a 5 pin ignition switch is a relatively simple process that requires basic tools and electrical knowledge. Here’s a step-by-step guide to wiring a 5 pin ignition switch:
Step 1: Disconnect the Battery
Always disconnect the battery before working on your car’s electrical system to prevent electrical shocks and other hazards.
Step 2: Locate the Ignition Switch
The ignition switch is usually located on the steering column or dashboard. Refer to your vehicle’s manual for the exact location.
Step 3: Remove the Old Ignition Switch
If you’re replacing an old ignition switch, remove the old switch by disconnecting the wiring harness and removing any mounting screws or bolts.
Step 4: Install the New Ignition Switch
Install the new ignition switch by mounting it in place and connecting the wiring harness to the correct terminals. Use a wiring diagram to ensure that you’re connecting the correct wires to the correct terminals.
Step 5: Test the Ignition Switch
Before reconnecting the battery, test the ignition switch by turning the key to the ‘ON’ and ‘START’ positions. Make sure that the engine cranks and the ignition system is functioning properly.
FAQs
Q: What is the purpose of an ignition switch?
A: An ignition switch controls the power to the engine and other critical electrical systems in your car. It allows you to start the engine and control various electrical functions, such as the lights and radio.
Q: How do I know if my ignition switch is bad?
A: If your ignition switch is bad, you may experience problems starting your car, or your car may stall while driving. You may also notice that your electrical systems are not functioning properly, such as the lights and radio.
Q: Can I replace my ignition switch myself?
A: Yes, you can replace your ignition switch yourself if you have basic tools and electrical knowledge. However, if you’re not confident in your abilities, it’s best to have a professional install the new switch.
Q: How much does it cost to replace an ignition switch?
A: The cost to replace an ignition switch varies depending on the make and model of your car and the location of the switch. Generally, the cost ranges from $50 to $250 for parts and labor.
Q: How long does it take to replace an ignition switch?
A: The time it takes to replace an ignition switch varies depending on the make and model of your car and the location of the switch. Generally, the process takes about 1-2 hours to complete.
Conclusion
Wiring a 5 pin ignition switch is a simple process that can be done by anyone with basic tools and electrical knowledge. Understanding the function of each terminal on the switch and following a wiring diagram can help you avoid costly mistakes and ensure that your car’s electrical system is functioning properly. If you’re not confident in your abilities, it’s best to have a professional install the new switch to avoid damage to your car’s electrical system.
