How To: Install 2018 Style 2010-2012 Mustang Headlights
Created by Cristian Coronado
Date Created: 10/23/2019
Last Updated: 5/17/2021
Check out our article explaining how to transform the look of your 2010-2012 S197 Mustang with our 2018+ style headlight kit!
10 14 mustang
- Use a small pick or flat head screwdriver to remove the plastic push pins holding down the radiator cover, then remove the cover and set it aside.
- Remove the (2) 8mm bolts securing the bumper pillars to the edges of the headlights.
- Support the vehicle with a lift or jack stands, and remove the (2)2 7mm screws securing the bumper to the bumper support bracket. (repeat this step for both sides).
- Remove the 7mm screws underneath the car securing the bumper to the closeout panel.
- Carefully pry the bumper free from the side brackets.
- Disconnect the fog lights and park lights if equipped.
- Loosen and remove the upper 10mm headlight retaining bolt.
- Underneath the headlight loosen and remove the (2) remaining 10mm bolts while supporting the headlight with your free hand.
- Bring the headlight forward and disconnect the turn signal and headlight electrical connections. (Repeat steps 7-10 for the other headlight).
- Remove the tape from the opening in the new headlight, and using a small pick or your fingers expose the turn signal electrical connection.
- Remove the turn signal socket from the old headlight and remove the bulb, then connect the pigtail from the new headlight to the factory turn signal socket and secure the turn signal socket into the new headlight. Because of polarity, you may have to rotate the connection whenever you install the headlight back into the car (Repeat this step for the other side).
- Remove the plastic film from both of the new headlights, and before completing the installation turn on the emergency flashers from within the car.
- Position the headlight into place and connect the electrical connections. The turn signal will either light up or it won’t, if it does continue to step 16, if not continue with step 14.
- If the turn signal will not light up, disconnect the electrical connections and remove the turn signal socket. Rotate the pigtail 180 degrees and reinstall the pigtail into the socket.
- Verify the turn signal power is on and ensure that both connections are secure.
- Install the headlight and finger tighten the upper 10mm bolt to hold the light in place while you verify the other side. (Repeat steps 13-16 for the other side)
- Turn on the headlights to ensure they power on as well.
- Turn off the lights and reinstall the retaining hardware for both headlights.
- On the driver-side bring the loose red wire up to the top.
- Take the provided harness and route it alongside the main harness running the length of the core support.
- Connect the harness to the red wire on the driver’s side. Repeat this step for the passenger side as well.
- Route the spliced end of the harness towards the passenger side park light.
- Disconnect the side marker connection and then turn the headlight switch to the park light option.
- Using a multimeter, determine which of the side marker wires recieve 12 volts. This can be done by inserting the red lead into the pigtail while grounding the black lead to a good ground. (Once found, note the color and stripe and power off the headlight switch).
- Route the new wire alongside the existing convoluted tubing and cut to length.
- Using the provided quick splice connector, install it over the wire that you confirmed was 12 volts.
- Position the red wire into the connector and crimp the blade to splice both of the wires then close the lid. Reinstall any convoluted tubing and cut it to length. (wrap any additional wiring with electrical tape).
- Neatly zip tie the red wire to the existing harness, and cleanly loop together the remaining harness at the center of the core support and zip tie it. (use this time to zip tie and dial in any additional wiring).
- Before reinstalling the front bumper, verify that all of the functions on the new headlights work as they should.
About the Video
2010-2012 Mustang 2018 Style Headlight Install/Review
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Published on 2019-04-24
2018 Style Headlight Kit
Transform the look of your 2010-2012 S197 Mustang with this 2018+ style headlight kit! The new Mustangs have a headlight housing that has three LED DRL lights in front of the headlight itself. The 2018 S550 headlight inspired design is done with a sequential feature; while others are offering a 2015 style with a switchback feature. This feature provides a menacing look for the S550. Now you can have that same look for your S197 Mustang!
This 2018+ headlight kit features a glossy black housing with functional S550 style LED DRL (Daytime Running Lights) lights. These headlights went a step further and have an amber sequential feature for your turn signal. The LED bulbs are cool blue in daytime running form. The headlights have a projector lens to provide a beam that illuminates the road evenly without blinding oncoming traffic. All of this plugs into your factory harness!
Does not fit factory equipped HID Mustangs.
The Red wire that comes with the kit is for the DRL (Daytime Running Lights) lights. It must be connected to an ignition source. If you are not sure about an ignition source, please consult with a professional installer.
H7 12V 55W Projector Bulb
-Fits 2010-2012 Mustang
Late Model Restoration LMR SVE 5.0Resto
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