How to Replace Fog Lights on a Mazda 6

Written by bryan clark
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How to Replace Fog Lights on a Mazda 6
(Hemera Technologies/ Images)

Changing the fog lights on your Mazda 6 allows you to replace burnt out fog lights or to customise the look of the stock lamps. Replacing damaged or faulty fog lights is a repair that many Mazda 6 owners will have to do at some point. To avoid exorbitant parts and labour costs by having the dealer replace the fog lights for you, have a go at it yourself before pulling into the service bay at your local Mazda dealership.

Skill level:

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Things you need

  • Jack
  • Jack stands (2)
  • Drill
  • Drill bits
  • Multimeter
  • Wire cutters

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  1. 1

    Raise the front end of the car with a jack and place jack stands underneath the frame.

  2. 2

    Locate the four clips on the rear of the fog light assembly under the car and press down on the top clips while sliding the light assembly out of the bumper.

  3. 3

    Unplug the factory harness that connects to the back of the fog light.

  4. 4

    Repeat Steps 2 and 3 for the opposite side.

  1. 1

    Plug the factory wiring harness into the back of the new fog lights.

  2. 2

    Line up the four clips around the factory fog light assembly in the bottom of the front bumper.

  3. 3

    Push the lights towards the front bumper until they click into place.

  4. 4

    Raise the car with the jack, remove the jack stands then lower it to the ground.

  1. 1

    Measure the fog light area and decide where you'd like to place the fog light mount.

  2. 2

    Mark the area with a marker.

  3. 3

    Drill a hole that will accommodate the screw that holds the fog light mount in place.

  4. 4

    Thread the fog light mount screw into the hole that you just drilled and tighten the nut and washer to hold it in place. You'll have to reach just above the fog light area in the front bumper, find the screw and tighten the nut and washer.

  5. 5

    Plug in the factory wiring harness if it will fit. If it doesn't fit, you'll need to cut the plug off, exposing the positive, negative and accessory wire. Connect these wires to the appropriate place on the new fog light. Consult the instructions included with your fog lights for this step.

  6. 6

    Use a multimeter to test the positive, negative and accessory wiring to ensure that you are using the right ones. The positive wire will always read approximately 12 volts even when the car is off. The negative will read 0. The third wire will be the one that controls the fog lights.

  7. 7

    Attach the wiring (positive, negative and accessory) to the appropriate places on the factory plug. The aftermarket fog lights should have a wiring diagram that will tell you which colour wire is positive, negative and the accessory. Connect the wires by stripping 1/4 of an inch off of each end and wrapping the two wires together with their exposed ends to make a solid connection (splice).

  8. 8

    Wrap the splices with electrical tape.

  9. 9

    Repeat Steps 1 through 8 for the opposite fog light.

  10. 10

    Raise the car with the jack, remove the jack stands then lower it to the ground.

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