Using these Noble fog bezels is easy. First, make sure your car is a 2015 - 2017 Subaru WRX or STI base or premium model. Since limited cars don't have the right wiring, these won't work for them. When installing, it's a plug - and - play process, so no need to make any modifications to your car. Just connect them properly and they're ready to go. As for maintenance, you can clean the gloss black housing with a soft, damp cloth to keep it looking shiny. Remember, the fog lights are not part of this set, so you'll need to use your existing ones. Enjoy the enhanced look and functionality these bezels bring to your car!