An aftermarket electric fan is an efficient way to cool your engine and improve performance. However, wiring the fan correctly is essential to ensure it functions correctly, and your engine doesn’t overheat. In this article, we will guide you through how to wire your aftermarket electric fan, including the necessary tools and materials, step-by-step instructions, and frequently asked questions.
Tools and Materials Needed
Before you start wiring your electric fan, gather the tools and materials needed. These include:
| Materials | Tools |
|---|---|
| Electric fan | Wire stripper |
| Relay | Crimping tool |
| Fuse holder | Soldering iron |
| Fuses | Heat shrink tubing |
| Wire | Electrical tape |
| Connectors | Zip ties |
Step-by-Step Wiring Instructions
Step 1: Determine Power Source
First, you need to determine the power source for your fan. You can wire your fan to your vehicle’s ignition switch, an accessory power source, or a manual switch. It’s essential to choose a reliable power source to ensure your fan operates correctly.
Step 2: Mount the Fan
Once you have determined the power source, mount the fan in the desired location. Make sure the fan is in a position where it can efficiently cool the engine. You can mount the fan either in front of the radiator or behind it.
Step 3: Wire the Relay
Next, you need to wire the relay. Connect the power wire to the fan to the relay’s 30 terminal. Connect the relay’s 85 terminal to a ground source. Connect the relay’s 86 terminal to the power source you determined in step one. Finally, connect a wire from the relay’s 87 terminal to the positive (+) terminal on the fan.
Step 4: Install Fuse Holder
It’s essential to include a fuse to protect your fan and vehicle’s electrical system in case of a short circuit. Install the fuse holder somewhere near the power source you determined in step one.
Cut a length of wire and strip both ends. Crimp one end to one side of the fuse holder. Then, solder the opposite end of the wire to a ring terminal. Finally, attach the ring terminal to the power source you determined in step one.
Step 5: Secure Wiring
After wiring, it’s essential to secure the wiring to prevent it from coming loose or getting damaged. Use zip ties to make sure the wires are neatly organized and not in the way of any moving parts. Cover exposed wires with electrical tape or heat shrink tubing to prevent short circuits.
FAQ
What size wire should I use?
The wire size you should use depends on the size of your fan and the distance from the power source to the fan. Typically, 10 to 12-gauge wire is suitable for most electric fans. Consult your fan’s manufacturer instructions for specific wire size recommendations.
Do I need to use a relay?
Yes, we recommend using a relay to ensure the fan operates correctly and to protect your vehicle’s electrical system. A relay allows you to use a smaller wire size to switch a larger current, improving safety and efficiency.
Can I use an existing fuse?
We recommend installing a new fuse holder and fuse to ensure maximum protection of your fan and vehicle’s electrical system. Using an existing fuse could cause issues if the fuse is already overloaded with other devices.
How do I know if my fan is working correctly?
After wiring your fan, test it to ensure it operates correctly. Start the engine and monitor the temperature gauge. The fan should turn on when the engine reaches a specific temperature, typically around 190 degrees Fahrenheit. If the fan doesn’t turn on, check your wiring, fuse, and relay connections.
What if I have multiple fans?
If you have multiple fans, you can either wire them in parallel or series. Wiring them in parallel ensures both fans receive the necessary voltage and current, improving efficiency. Wiring them in series means that each fan will receive a different voltage, which could cause one fan to work harder than the other. Consult your fan’s manufacturer instructions for specific wiring recommendations for multiple fans.
Conclusion
Wiring an aftermarket electric fan is essential for ensuring your engine stays cool and performs optimally. By following the step-by-step instructions and frequently asked questions in this article, you can wire your fan correctly and confidently. Enjoy the benefits of an efficient cooling system and improved engine performance with your new electric fan.
