Remove the vehicle's wheel being extremely careful not to put any part of your body underneath the car.

Remove the front fender liner cover that protects the headlight bulbs by loosening the retention screws (white arrows). If your fender liner doesn't have the cover, remove all of the 8MM fender liner screws and the one 10MM nut that holds the liner in place.

With all retention screws removed, pull the fender liner from the vehicle.

Remove the four T-25 screws holding the ballast in place.

Once all four retention screws are removed, pull the headlight ballast from the assembly.

Unplug the first connector by pressing the two black retention clips together (white arrows) and pulling the connector from the ballast.

Unplug the second connector by carefully and firmly wiggling it back and forth until it disconnects from the ballast. There is no retention clip so it can just be pulled off.

Over time the plastic from the headlight ballast can melt to the connector resulting in difficulty removing it. If it's melted together, use a flathead screwdriver to carefully pry it off.

Connect the new headlight ballast to the headlight assembly. Ensure the bottom connector is routed so the cables go towards the front of the vehicle (white arrow).

Do not reinstall the ballast screws yet. It's best to leave the ballast hanging in place and test it before putting everything back together, in case it doesn't work when you test it.

As stated before, it is highly recommended to replace both headlight ballasts at the same time. If only one is replaced, it's very likely the other one will short out.

Re-connect the battery to test the new headlight bulbs.

Test the new headlight ballast by inserting the key into the ignition and turning the headlight knob to the on position. Ensure no error codes pop on the dashboard. If headlight doesn't light up, check the bulb and troubleshoot further.

Now that the headlight ballast(s) is confirmed to work, reinstall the four ballast screws that hold it into place.

Now that the new headlight ballast(s) are verified to work, re-install the fender liner, and wheel the same way it was removed.

Good job replacing your headlight ballast(s)! Keep an eye out for any flickering or error codes that may point to deeper issues.