How to Properly and Safely Install a Car Horn Relay
As is known, the car horn serves to signal other road users or drivers when intending to accelerate or to warn of danger. Inside the horn component, there is a relay that connects the battery with the electrical current in the car. The relay in the car can also be used as a solution to one of the factors that cause the horn to stop working. Given the important function of the relay, you need to know how to install the horn relay. Below is an explanation of how to properly and safely install the car horn relay.
How to Install a Car Horn Relay
Before installing the horn relay in the car, you must prepare several tools as follows.
- Relay socket
- Thick stranded wire with a diameter of about 5mm
- Fuse box
- Connector terminal (make sure it matches the electrical load of the car you are using)
- 10mm ring terminal
Read Also: How to Properly Install a Car Starter Relay
After you have prepared these tools, it is now time to enter the process of installing the horn relay. Here is the correct and safe way to install the horn relay.
1. Installing the Relay in a Negative Voltage System
When you are about to install the relay in a negative voltage system, you must connect the relay pin (number 30) to the positive terminal of the battery.
During this installation, you must use a thick wire that is directly connected to the battery. Next, the relay pin (number 87) must be connected to the positive terminal of the car horn. For this relay installation, you can use wire with thick or medium thickness. Therefore, you need to know the location of the car horn fuse code and its meaning.
2. Installing the Relay in a Positive Voltage System
The mechanism for installing the relay in a positive voltage system is almost the same as the installation in a negative voltage system. You can start the installation from the relay pin (number 30) to the positive terminal of the battery.
Next, connect the relay pin (number 87) to the positive terminal of the horn. Then connect the relay pins (number 87 and 85) to the car horn wire.
You should know that the installation of relay pins usually depends on the brand of the relay. Therefore, you must be careful before purchasing it. Make sure to always pay attention to the numbers on the relay pins before proceeding with the installation process.
Benefits of Installing a Horn Relay in a Car
Here are some benefits obtained when you install a horn relay in the car.
- Reduces resistance in the electrical current so that the performance of the electromagnetic components in the car can function optimally.
- Makes the car horn sound louder, thereby increasing the safety and security of the driver. A loud horn can provide a quicker signal to road users or other drivers, allowing them to be more aware of your presence on the road, especially in emergency or critical situations.
- Can function to test the car's electrical current, thus extending the lifespan of the car's electromagnetic components.
- Extends the lifespan of the car switch because the relay can connect and disconnect excessive electrical current.
Read Also: This is How a Waterproof Horn Works to Prevent a Muffled Sound
Now you are much more familiar with the functions of the horn relay in the car. After seeing the methods taught above, do you understand how to properly install the horn relay?
If you feel less skilled, you can immediately take your car to a workshop or the nearest Daihatsu dealer to install the horn relay. Make sure to always check the condition of your car's horn along with other components to minimize any damage that may occur.
