Today, I'm going to talk about a very annoying issue that many people face: LED light bar flickering. If you have installed an LED light bar on your Jeep, truck, boat or bike, you might have noticed that sometimes it flickers or flashes randomly. This can be very distracting and even dangerous, especially at night. So, why does this happen and how can you fix it? Let's find out!

First of all, you need to understand that LED light bars are different from regular light bulbs. They use less power and produce less heat, but they also require a constant and stable voltage to work properly. If the voltage fluctuates or drops below a certain level, the LED light bar will start to flicker. This can be caused by several factors, such as:

A weak or dying battery. If your battery is not fully charged or is old and worn out, it might not be able to provide enough power to the LED light bar. You can check your battery voltage with a multimeter or a voltmeter. If it's below 12 volts, you need to replace it or charge it.


A faulty or loose wiring. If the wires connecting the LED light bar to the battery or the switch are damaged, corroded, or loose, they might create resistance or interference in the circuit. This can also affect the voltage and cause flickering. You can inspect the wiring for any signs of wear and tear, and make sure they are securely connected and insulated.


A bad or incompatible switch. If you are using a switch to turn on and off your LED light bar, you need to make sure it's compatible with the LED light bar. Some switches are designed for regular light bulbs and might not work well with LED light bars. They might not be able to handle the current or the frequency of the LED light bar, and cause flickering. You can try replacing the switch with a better one that is specifically made for LED light bars.

A wrong or insufficient resistor. If you are using a resistor to regulate the voltage of the LED light bar, you need to make sure it's the right one for your LED light bar. Different LED light bars have different voltage requirements, and using a wrong or insufficient resistor can cause flickering. You can check the specifications of your LED light bar and use a resistor that matches its voltage rating.


A faulty or incompatible LED light bar. If none of the above factors are causing the flickering, then it might be that your LED light bar itself is defective or incompatible with your vehicle. Some LED light bars are not designed for certain vehicles or models, and might not work well with their electrical systems. You can try using a different LED light bar that is compatible with your vehicle and see if that solves the problem.

I hope this blog post has helped you understand why your LED light bar flickers and how to fix it. If your light bar is faulty show our full range of affordable light bars.

Shop Now!

How to