It's a switch. To understand wiring harnesses, you must understand the vehicle's wiring system. It's all about connections and the role of the light bars in the wiring system.

Do you need a harness kit for LED light bars?

For vehicle light bars, missing wiring harnesses can be a problem. You may not think buying or installing it at first is necessary, but it can cause problems in the future. You need a proper wiring kit or switch to avoid accidents.

What should you do before installation?

Wiring light bars for your truck or SUV can significantly help if you have a late-night driving habit. Not only does it help ease driving, but it allows you to enjoy a late-night ride by lighting up the road.

Installing LED bars is easy now. This is due to their better contact size and ease of installation requirements. However, there are four main steps to installation:

1. Use relays on simple switches

LEDs have a low power capacity and are best used with a relay with the help of a simple switch. Relays are better at carrying more load than switches.

Therefore, there is no problem or concern about the relay getting hot or failing while in use. The voltage drop of the relay is also tiny. Relays also allow better control in the form of a switch for better mounting. You can turn many lights on and off using a single switch.

2. Choose a fuse

You must take steps to avoid accidental damage to the vehicle's electrical system. For that matter, it is best to place a fuse between the battery and the relay.

Once the light is on, it prevents the vehicle from causing any damage to the electrical system. That is because the fuse becomes a scapegoat and sacrifices itself in a power outage.

In this way, the vehicle's primary wiring system will not be damaged during a power surge. A perfect fuse must have an accurate ampere rating. If the rating is incorrect, the fuse will not trip when needed.

3. Make sure your reasons are good

You will set up an LED light relay power connection with the battery. This means that the negative end of the battery will not be used as ground. You need a clear connection between the bare metal and the circuit.

It also helps when you ground the wiring associated with the chassis of the vehicle. With a simple multimeter, it's best to test the ground. So in the future, it can be made permanent for better connection.

4. Identify the auxiliary switch or plant

Another important factor when wiring LED light bars is choosing the right switch. The relay can be triggered by connecting the aftermarket switch from the car.

Better installation means targeting the vehicle's headlights (high beams). To do this, you can plug in a wiring harness. It leads to the following:

It keeps the battery from running out

If the beam stays on, the darkness may not require you to have a light bar. In today's vehicles, you won't leave the beam on, even if you're not careful, especially when the ignition is on, or the lights are off.

If you follow the above 4 steps, you will be protected from any unsolicited trouble. Even if you leave the light area and enter the dark area while driving, you will not encounter any problems.

Guide to Off-road LED light bar installation with harness kit

To better install the LED Lightbar, there are six steps:

Step 1

You need to know the vehicle's internal wiring system. Reference points need to be identified to establish a strong connection.

Step 2

Connect the terminal to the light bar. Touch the red line lightly to the white line. Connect the black wire to the negative terminal. Where connections are made, the wiring is maintained with electrical tape.

Step 3

The red lines in the system must be connected to fuses. You must remove the wire and tap the positive terminal of the battery. Remove the black wire from the switch and tap the battery's negative terminal.

Step 4

Feel free to put the switch button anywhere convenient. This is due to the stickiness of the on-off button.

Look for the firewall cover when you place the button in the car. Firewall covers are available on the driver's side.

Connect the switch wire to the inside of the vehicle. You need to connect the switch wire from the inside to the engine compartment to do this.

Step 5

It would be best if you established a connection between the photo-positive pole line and the red trigger.

For this purpose, black wires should be connected to ground or harmful power sources.

Unnecessary battery depletion must be avoided, primarily if it hasn't been used long.

Step 6

You need to check the new wire switch, ensuring the lights are working how you want them to. If there are any problems with the wiring, an expert can help fix them problem.

You can find more details below these articles:

 1. How many amperes does the led light bar consume 

 2. Fuse sizes for 12v LED lights: Use and Prevention

 3. Is the light bar legal

 4. What size wire should I use for my LED light bar

 5. My light bar has completely or partially stopped working 

 6. How to choose the best LED light bar for your vehicle

 7. How to Wire a Light Bar with a 5 Pin Rocker Switch 

 8. Best placement for auxiliary LED lights 

 9. How many watts of good LED light bars are suitable for car use 

 10. Offroad Led Light Bars Installation Manual