S550 Mustang Fog Light Installation

S550 Mustang Fog Light Installation

Last Updated November 28, 2023 | Bill Tumas

Adding a set of aftermarket S550 Mustang fog lights is an easy and cheap way to improve nighttime visibility and change the look of the front end. In this article, we're going to be installing a set of fog lights from Diode Dynamics. These fog lights were meant to be direct replacements for the 2015-2017 EcoBoost, GT, and V6 Mustangs. Because Ford did away with circular fog lights with the 2018 front-end refresh, you won't be able to install these on 2018 and later models.

While we're installing a set of from Diode Dynamics in this video, the process is largely the same for any direct replacement fog light.

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Mustang Fog Light Install Instructions

Before you attempt to install your new fog lights, it's a good idea to jack your car up and remove your front wheels. This isn't required but can give you extra room to work and make the process quicker and easier. If you decide to not raise your car and take the front wheels off, be sure to turn your steering wheel to full lock to make accessing the fog lights as easy as possible.

The installation process is the same on both sides, so repeat the steps for each side as necessary.

Parts and Tools Needed:

  • Small Flathead Screwdriver
  • Clip Removal Tool
  • 7mm Socket

Step 1: Pull Back Fender Liner

Remove the five plastic clips holding the front of the fender liner in place. Then, pull back the fender liner to easily access the fog light housing.

Mechanic pulling back the fender liner to access the fog light

Step 2: Remove Fog Light

Unplug the wiring harness from the back of the fog light and unscrew the three screws holding it in place. Carefully remove the factory fog light.

Mechanic unscrewing and removing the stock fog light

Step 3: Install Aftermarket Fog Light

Insert the aftermarket fog light into the area where the factory fog light was. Reinstall the factory screws to secure it into place.

Mechanic installing the aftermarket fog light using the factory hardware

Step 4: Reconnect Factory Wiring

Reconnect the factory wiring harness by plugging it into the socket on the back of the aftermarket fog light.

Mechanic reconnecting the factory wiring harness

Step 5: Reinstall Fender Liner Hardware

Move your fender liner back into place and reconnect the factory hardware.

Mechanic reinstalling the factory fender liner hardware and putting it back into place

Congratulations, you're all done!

Make the Most of Your New S550 Fog Lights

With your newly installed aftermarket fog lights, you'll be able to see clearer at night and in challenging weather conditions. If you're looking to upgrade your lighting setup further, check out our guide on S550 Mustang lighting upgrades! Fog lights are also a great improvement for more than just the S550 generation. If you have a 1964.5-1973 Mustang, check out our guide on how to install fog lights on a classic Mustang.


This article was researched, written, edited, and reviewed following the steps outlined in our editorial process. Learn more about CJ's editorial standards and guidelines.