1. Disconnect the battery.
This is a safety precaution to prevent any electrical shock while working on the dimmer switch. To disconnect the battery, loosen the negative terminal bolt (the one marked with a "-") with a wrench and remove the cable from the terminal.
2. Remove the steering wheel cover.
The steering wheel cover is held in place by several screws. Remove these screws with a screwdriver and carefully pry the cover off.
3. Remove the airbag module.
The airbag module is located behind the steering wheel. To remove it, you will need to insert a special tool (or a flat-head screwdriver) into the holes on either side of the module and press inwards. This will release the module and allow you to pull it out.
4. Disconnect the airbag module connector.
Once the airbag module is out, you will need to disconnect the electrical connector from the back of it. To do this, simply press on the release tab and pull the connector apart.
5. Remove the steering wheel.
The steering wheel is held in place by a single nut in the center. Use a wrench to loosen this nut and remove the steering wheel.
6. Remove the dimmer switch.
The dimmer switch is located behind the steering wheel. It is held in place by two screws. Remove these screws with a screwdriver and pull the switch out.
7. Disconnect the dimmer switch connector.
Once the dimmer switch is out, you will need to disconnect the electrical connector from the back of it. To do this, press on the release tab and pull the connector apart.
8. Install the new dimmer switch.
Insert the new dimmer switch into the hole behind the steering wheel and secure it with the two screws.
9. Reconnect the dimmer switch connector.
Plug the electrical connector back into the dimmer switch.
10. Reinstall the steering wheel.
Place the steering wheel back on the steering column and tighten the center nut.
11. Reinstall the airbag module.
Insert the airbag module back into its place behind the steering wheel and press it firmly until it clicks into place.
12. Reconnect the airbag module connector.
Plug the electrical connector back into the airbag module.
13. Reinstall the steering wheel cover.
Snap the steering wheel cover back into place and secure it with the screws.
14. Reconnect the battery.
Reconnect the negative terminal cable to the battery and tighten the bolt.
