If you are looking to install a light bar on your vehicle or ATV, it is important to have a proper wiring diagram to ensure the light bar functions correctly. A 5 pin relay is an essential part of the wiring process, which controls the power supply to the light bar. In this article, we will discuss the basics of light bar 5 pin relay wiring diagram and provide a step-by-step guide on how to install a light bar on your vehicle.
What is a Light Bar 5 Pin Relay?
A light bar 5 pin relay is a component that is used to control the power supply to the light bar. The relay acts as a switch, which allows the electrical current to flow from the battery to the light bar. The 5 pin relay consists of five pins that control the different functions of the relay.
What are the Functions of the Five Pins?
Pin 30 – This pin is used to connect the power supply from the battery to the light bar.
Pin 85 – This pin is connected to the ground.
Pin 86 – This pin is connected to the switch, which is used to turn on and off the light bar.
Pin 87 – This pin is connected to the light bar.
Pin 87a – This pin is not used in a light bar 5 pin relay.
Materials Required for Light Bar 5 Pin Relay Wiring Diagram
Before we start with the wiring process, you will need to gather the following materials:
- Light bar
- 5 pin relay
- Wire cutters
- Wire strippers
- Electrical tape
- 12-gauge wire
- Fuse holder
- Fuse
- Wiring harness
- Toggle switch
Step-by-Step Guide to Install a Light Bar 5 Pin Relay Wiring Diagram
Step 1 – Mount the Light Bar
The first step is to mount the light bar on your vehicle. You will need to choose a suitable location where the light bar will not obstruct your view while driving. Once you have chosen the location, use the mounting brackets to secure the light bar to your vehicle.
Step 2 – Install the Wiring Harness
Connect the wiring harness to the light bar. The wiring harness consists of two wires – the positive and negative wires. Connect the positive wire to the positive terminal on the light bar and the negative wire to the negative terminal on the light bar.
Step 3 – Wire the Relay
Connect the 12-gauge wire from the positive terminal on the battery to pin 30 on the 5 pin relay. Connect the black wire from the wiring harness to pin 87 on the 5 pin relay. Connect the white wire from the wiring harness to pin 85 on the 5 pin relay. Connect a wire from pin 86 on the 5 pin relay to the toggle switch.
Step 4 – Install the Fuse
Install a fuse holder between the positive terminal on the battery and pin 30 on the 5 pin relay. The fuse will protect your vehicle’s electrical system from any potential damage caused by a fault in the wiring.
Step 5 – Install the Toggle Switch
Mount the toggle switch in a convenient location on your vehicle’s dashboard. Connect a wire from the toggle switch to pin 86 on the 5 pin relay. Use electrical tape to secure the wires in place.
Step 6 – Test the Light Bar
Turn on your vehicle’s ignition and toggle the switch to test the light bar. If the light bar illuminates, then the wiring has been installed correctly.
FAQ (Frequently Asked Questions)
1. What is a light bar?
A light bar is a row of LED lights that are mounted on the roof or front bumper of a vehicle to provide extra illumination while driving.
2. Why do I need a relay for my light bar?
A relay is required to control the power supply to the light bar. Without a relay, the light bar may not function correctly, and there is a risk of damaging your vehicle’s electrical system.
3. How do I choose the right size of wire for my light bar?
The wire size to use depends on the amperage of the light bar. Check the manufacturer’s specifications to determine the correct wire size to use.
4. How do I know if the light bar is compatible with my vehicle?
Check the manufacturer’s specifications to ensure that the light bar is compatible with your vehicle’s electrical system.
5. Can I install a light bar myself?
If you have the necessary tools and knowledge, you can install a light bar yourself. However, if you are unsure, it is recommended to seek the help of a professional.
| Pin Number | Function |
|---|---|
| Pin 30 | Connects power supply from the battery to the light bar |
| Pin 85 | Connected to the ground |
| Pin 86 | Connected to the switch, which is used to turn on and off the light bar |
| Pin 87 | Connected to the light bar |
| Pin 87a | Not used in a light bar 5 pin relay |
