Using these fog light bezels is straightforward. First, make sure your car is a 2018 - 2021 Subaru WRX or STI base or premium model. Since the installation is simple and doesn't need any modifications, you can easily do it at home. Just follow the basic steps of removing the old bezels and attaching the new ones. When driving, the sequential turn signal will work automatically, making your turns more noticeable. As for maintenance, you can clean the gloss black housing with a mild car cleaner and a soft cloth regularly to keep it looking shiny. Remember, these bezels don't come with fog lights, so you'll need to use your existing ones. And if your car is a limited model, these bezels won't work due to the lack of proper wiring behind the bumper.