Dual Electric Fan Relay Wiring Diagram: Explained in Simple Terms

If you’re looking for a reliable and efficient way to cool your vehicle’s engine, a dual electric fan system is an excellent choice. But, installing a dual electric fan system can be a daunting task, especially if you’re not familiar with the wiring process.

This article will explain everything you need to know about the dual electric fan relay wiring diagram in relaxed English, so you can easily understand the steps involved. We’ll also include tables and FAQs to make the process even simpler.

What is a Dual Electric Fan System?

A dual electric fan system consists of two fans that are mounted side-by-side to cool your engine. These fans work together to circulate air through your radiator, which lowers the temperature of your engine and prevents it from overheating.

Most dual electric fan systems come with a relay that controls the fans, which is used to switch the fans on and off when necessary. The relay is connected to a temperature sensor that detects when the engine gets too hot and activates the fans.

The Dual Electric Fan Relay Wiring Diagram

The dual electric fan relay wiring diagram outlines the various wires and connections required to install a dual electric fan system. There are several different types of dual electric fan relay wiring diagrams, but they all follow a similar layout.

Here’s a brief overview of the different components that make up the dual electric fan relay wiring diagram:

  • Fan Relay: This is the main relay that controls the fans. It’s typically a 40-amp relay that’s mounted near the fans.
  • Temperature Sensor: This sensor detects when the engine gets too hot and activates the fans. It’s typically mounted near the thermostat housing or in the radiator.
  • Fuse: The fuse protects the wiring and the fans from electrical damage.
  • Ground Wire: This wire connects to the vehicle’s chassis and provides a ground for the fans.
  • Positive Wire: This wire supplies power to the fans when the relay is activated. It’s typically connected to the battery or to a power source that’s controlled by the ignition switch.

Step-by-Step Instructions for Wiring a Dual Electric Fan System

Now that you understand the different components of the dual electric fan relay wiring diagram, let’s take a look at the step-by-step instructions for installing a dual electric fan system:

Step 1: Mount the Fans

The first step is to mount the fans in the engine bay. Most dual electric fan systems come with brackets that are designed to mount the fans to the radiator or to the core support.

Make sure the fans are mounted securely and that there’s enough clearance between the fans and the engine components.

Step 2: Install the Temperature Sensor

The next step is to install the temperature sensor. The sensor should be mounted in an area where it can detect the engine’s temperature accurately. Typically, it’s mounted near the thermostat housing or in the radiator.

Make sure the sensor is mounted securely and that the wiring is protected from damage.

Step 3: Connect the Ground Wire

The ground wire should be connected to the vehicle’s chassis. This provides a ground for the fans and ensures that they operate properly.

Make sure the ground wire is connected securely and that there’s no corrosion or damage to the connection.

Step 4: Install the Fuse

The fuse should be installed between the battery and the relay. This protects the wiring and the fans from electrical damage in the event of a short circuit.

Make sure the fuse is the correct amperage for your particular dual electric fan system.

Step 5: Connect the Positive Wire

The positive wire should be connected to the relay. This wire supplies power to the fans when the relay is activated.

Make sure the positive wire is connected securely and that there’s no corrosion or damage to the connection.

Step 6: Connect the Relay to the Temperature Sensor

The relay should be connected to the temperature sensor. This allows the relay to activate the fans when the engine gets too hot.

Make sure the wiring is connected securely and that there’s no damage to the connection.

Step 7: Test the System

Once all of the wiring is complete, it’s time to test the dual electric fan system. Start the engine and let it warm up. When the engine reaches the temperature threshold, the fans should activate automatically.

If the fans don’t activate, there may be a problem with the wiring, the relay, or the temperature sensor. Check all of the connections and wiring to ensure that everything is installed correctly.

Frequently Asked Questions

Q: Can I install a dual electric fan system myself?

A: Yes, it’s possible to install a dual electric fan system yourself. However, if you’re not familiar with automotive wiring or electrical systems, it’s best to have a professional do the installation.

Q: What’s the difference between a single fan system and a dual fan system?

A: A single fan system has one fan that’s used to cool the engine, while a dual fan system has two fans that work together to cool the engine. Dual fan systems are more efficient and effective than single fan systems.

Q: How do I know if my dual electric fan system is working properly?

A: You can tell if your dual electric fan system is working properly by monitoring the engine’s temperature. If the fans activate when the engine gets too hot, the system is working correctly.

Conclusion

A dual electric fan system is a great way to keep your engine cool and running smoothly. With the information provided in this article, you should now have a better understanding of the dual electric fan relay wiring diagram and how to install a dual electric fan system.

Remember to follow the step-by-step instructions carefully, and always double-check your connections to ensure that everything is installed correctly. With a little patience and care, you’ll have a reliable and efficient dual electric fan system that will keep your engine running smoothly for years to come.