Fog Lights Not Working After Led Headlight Install – What To Do!

We have heard of people complaining about their fog lights not working after LED headlight install. 

This can be quite frustrating since the last thing you want is to have issues with your fog lights. You rely on these lights as a supplementary support to your headlights when you need extra visibility during more difficult driving situations.

What your fog lights do is they generate a wider beam that enables you to see further on the road. But when these lights fail, you may have difficulties with readjusting to the conventional low beam and high beam headlights that you have.

Find out why your fog lights are not working after a LED headlight install. We will also include common reasons behind fog light issues that you need to know. Let’s dive right into it.

fog lights not working after led headlight install

Fog Lights Not Working After LED Headlight Install Reasons

When you need to use your fog lights, you have to engage that switch in your cabin indicating to your relay that your lights must be turned on. Afterwards, your relay sends power from your battery, which then causes the lights to switch on. Your fuses are responsible for powering electrical components in your vehicle and preventing these from overloading your system. 

However, when there is a problem detected by your fuse, it can break your connection or even blow. So, this is one of the reasons why your electrical components may fail. Here are among the reasons behind your fog lights not working after LED headlight install.

1. Fuse issues

A blown fuse is the most common reason why you may have a malfunctioning fog light. This prevents your circuit from being completed, so your lights will not turn on. This is why we recommend checking for a blown fuse as an initial resort when you notice your fog lights are not working.

2. Bulbs are burned out

As time passes by, your bulbs may wear out, which causes them to stop working. You can tell that it is burned out when only one light turns on and the other is completely out. While a burned out bulb will not cause the other one to malfunction, it would be good to replace it to get the most benefit from your fog lights.

3. Relay problems

Your relay sends out power from your battery and to your lights. However, once you have a faulty relay, this causes the connection to be unstable and unable to complete. Your relay may fail because of poor grounding issues. Having a poorly grounded wire prevents it from protecting your circuit. Therefore, you need to check your relay to determine if this is what is causing your fog light problems.

Additional Points To Consider

You rely on your fog lights for greater visibility during dim light situations. This is why if you notice your fog lights have been failing, you need to get it repaired sooner than later. 

It is also important to note that your LEDs work by accessing your car’s stock power supply. Then, this power is converted into energy used to light up the fog lights. So, if you are having trouble with getting your fog lights to work, you may be experiencing some connection issues. Perhaps the connections are loose, which you can tell with flickering lights.

Keep it mind that this could be a connector issue, grounding problem, or the fuse itself. So, inspect the adapter or drivers and see if everything is working fine. For the most part, LEDs include an adapter or driver. The latter is also called a ballast, and it assists with the power conversion of your LED.

This is why when you encounter some issues with your LED output, check your adapter or driver. You may also want to use a higher quality device designed to prevent flickering of lights.

If your vehicle does not have an adapter or driver at all, be sure to install one that is compatible with your vehicle’s power supply. An incompatible driver or adapter does not solve your issue. So, it is best to have a mechanic’s help when installing the right driver or adapter.

It is also possible that there is a DRL or day running lights interference issue going on. This is basically a power distribution issue, which would require using a device that provides your LEDs and DRLs with the right power. You can use a wiring harness or a decoder for that. By installing these devices, you should be able to have your fog light issue sorted out.

Read More: 7 Reasons Led Headlights Only Work On High Beam

Final Thoughts

When your fog lights are not working after a LED headlight install, it can get frustrating. So, it is best to inspect the actual cause of the problem and have it troubleshooted accordingly. By doing so, you can avoid further issues and have a safer driving experience.

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