How to Install: Elite Series Combination Fog Lamps for 2018–2023 Ford Mustang

January 26, 2026 | Print this Page

The Diode Dynamics Elite Series Combination Fog Lamps for the 2018–2023 Ford Mustang are designed for perfect OEM-style fitment while delivering modern functionality. These lamps illuminate in bright white for parking lights and DRLs, feature a sequential amber turn signal, and include a startup sequence when the vehicle is unlocked.

This guide walks through the complete installation process for the Elite Series Combination Fog Lamps, including bumper removal, DRL harness installation, turn signal configuration, and final aiming.

Installation Tools
Installation Instructions
Aiming Instructions
Questions About the Installation?
Where Can I Buy These Fog Lamps?

Installation Tools

Plastic trim removal tool
7mm socket
8mm socket
7/32” socket
10mm socket
Small screwdriver (included in kit)

Time Required: Approximately 2–3 hours.

Installation Instructions

Step 1 – Remove the upper valance

Using a plastic trim removal tool, remove the eight push rivets securing the upper valance. Gently pry the valance off and set it aside.

Step 2 – Remove inner fender liner fasteners

On both sides of the vehicle, remove the three push rivets securing the inner fender liner.

Step 3 – Remove lower splash guard hardware

Using a 7mm socket, remove the fifteen screws securing the bumper cover to the lower splash guard.

Step 4 – Remove upper bumper bolts

Using an 8mm and 7/32” socket, remove the eight bolts securing the bumper cover to the core support.

Step 5 – Release bumper cover from fenders

Peel back the inner fender and remove the two 10mm nuts securing the bumper cover to the fender on each side. A push pin between the nuts will remain in place—pull the bumper down and forward to release it.

Step 6 – Remove the bumper cover

Lift and rotate the bumper cover slightly upward to fully remove it. Disconnect the factory fog lamp connectors and set the bumper cover aside.

Step 7 – Install the DRL harness

Unplug the factory headlight connector and install the included DRL harness inline. Plug the harness back into the headlight. Repeat on both sides of the vehicle.

Step 8 – Modify the fog lamp connector

Locate the extra wire on the DRL harness with braided loom. Remove the white retaining clip from the fog lamp connector, then remove the sealing plug from pin 6. Insert the new terminal into position 6, ensuring proper orientation, and reinstall the retaining clip. Repeat for the other side.

Step 9 – Remove the factory fog lamps

Using a 7mm socket, remove the three screws securing each factory fog lamp to the bumper cover. The factory screws will be reused.

Step 10 – Install the Elite Series combination lamps

Install the new Elite Series Combination Fog Lamps into the factory locations. Left and right sides are labeled on the housing. Secure using the factory 7mm screws.

Step 11 – Select turn signal mode

Using the integrated switch located inside the main connector on the back of the fog lamp housing, select your preferred turn signal mode:

STAT: Static (non-sequential)
EU: Sequential – faster speed
US: Sequential – slower speed (matches tail lights)

Use the included screwdriver to set the switch. The factory connector will seal the housing once installed.

Step 12 – Reinstall bumper cover

Reconnect the fog lamp connectors, place the bumper cover back onto the locators, and reinstall all fasteners by reversing Steps 1–5.

Aiming Instructions

Step 13 – Aim the fog lamps

Park the vehicle 25 feet from a wall on level ground. Measure the height from the ground to the center of the fog lamp and mark that height on the wall. Place a second mark four inches below.

Using the 8mm adjustment bolt on the back of the fog lamp, rotate clockwise to aim downward or counterclockwise to aim upward. The top of the beam should align with the lower mark.