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Installation Guide for 15-17 and 18-22 Ford Mustang Headlights

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THIS GUIDE IS FOR​

ALPHAREX specializes in designing and producing superior and uniquely stylish aftermarket automotive performance lighting with unrival innovative technology. The following installation guide we take you through the installation of your new ALPHAREX HEADLIGHTS for your 15-17 and 18-22 FORD MUSTANG step by step.

NOTE: Some vehicle require the DRL harness installed for the headlight to function properly.

Do NOT use dielectric or any type of weather sealing grease on connectors or sockets.
Doing so will result in connection problems and will not be covered under warranty. Please click HERE for further explanation.

Table of Contents

Disclaimer: This installation article is a tutorial guide. By reading this article, you agree it is for reference only and AlphaRex USA and its distributors make no guarantee on the finished results. Under no circumstances whatsoever shall AlphaRex USA nor its distributors be liable for any damage, misuse or personal injuries. If you do not fully understand the installation procedure, it is highly recommended that you seek help from professional mechanics to do the installation.

INSTALLATION TOOLS

1/4 Ratchet
Power Tool
Metal Panel Popper
Flat Screwdriver
1/4 Extension
Socket
Size NEEDED
8
7/32
10
13

NOTE: Whenever using a power tool, please make sure do not overtighten the screws.

PART I - REMOVE HEADLIGHTS

DISCONNECTING THE NEGATIVE BATTERY TERMINAL

Whenever working on your vehicle always start by disconnecting the negative battery terminal.

REMOVE THE RADIATOR SHROUD

Use a panel popper and start by removing plastic push pins that is holding up the radiator
shroud cover.

Remove the radiator shroud cover and set it aside for later re-installation.

 

REMOVE THE FRONT BUMPER

First, remove the 6 X 8mm bolts and 2 X (7/32mm) bolts from the top of the grille.

Next, we will remove the inner bumper bolts and nuts from the back of the bumper.

Use the panel popper to remove the 3 plastic retainers.

Lift and open the plastic cover in order to reach the inner bumper nuts and bolts.

For 15-17 Mustang model: remove 2 X 8mm bolts from the inside.
For 18-22 Mustang model: remove 2 X 10mm bolts from the inside.

Please follow the same steps for the other side of the bumper.

From the upper corner, gently pull down and then outward to release the bumper cover.
Use a piece of cloths to protect the vehicle’s paint during removal.

Please follow the same steps for the other side of the bumper.

Next, lift up the top center of the front grille and pull it outward to release.

Loosen up the whole front bumper by pulling it outward, so you have enough space to reach
the headlights’ bolts.

 

REMOVE THE HEADLIGHTS

First, remove the 2 X 10mm bolts from the top and bottom of the headlight.

Next, remove the 13mm bolt from the side of the headlight.

Remove the headlight housing and unplug the wires.

Lastly, unplug the turn signal socket from the car’s turn signal lamp.

Please follow the same steps for the other headlight.

PART II - INSTALL HEADLIGHTS

PLUG THE TURN SIGNAL WIRE HARNESS

From the new Alpharex headlights package, please find the included (pair of) turn signal wire
harnesses. On each side, plug the wire harness to the vehicle’s turn signal connector and the other
end of the plug to the turn signal lamp.

Please follow the same step for the other side of the vehicle.

PLUG AND INSTALL THE HEADLIGHTS

First, plug the white wire (from the turn signal harness) to the new ALPHAREX headlight
(yellow wire). DO NOT USE DIELECTRIC GREASE!

Plug the headlight’s socket into the vehicle. AGAIN, PLEASE DO NOT USE DIELECTRIC GREASE!

Install the headlight onto the vehicle and secure with the 3 bolts.
Please follow the same steps for the other side of the headlight.
Finish the headlights installation by reversing the removal process of the vehicle’s body
parts.

TEST THE HEADLIGHT FUNCTIONS

Test the functions of your ALPHAREX headlights to ensure everything works properly.

ADJUST HEADLIGHT LEVEL

After headlights installation is complete.
You will next aim the headlight at about 25ft against a wall on a level surface.

Clockwise to lower the level
Counterclockwise to raise the level

Please follow the same procedure for the other headlight.

COMPLETE INSTALLATION

Congratulations! you have completed the installation for ALPHAREX 2015-17 and 2018-22 FORD
MUSTANG headlights.

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