The legality of installing aftermarket lighting on your car can vary depending on where you live. In general, most states have laws regulating the use of aftermarket lighting on vehicles. These laws can cover a wide range of topics, such as the type of lights that can be used, where they can be placed on the vehicle, and how bright they can be.

The process of installing aftermarket lighting on a car can vary depending on the type of lights you're installing and the make and model of your vehicle. In general, the process will involve gathering the tools and equipment, following instructions intently, prepping the car, installing the necessary wiring and lights, and testing everything.

The lifespan of aftermarket lights can vary depending on the type of lights and the manufacturer. In general, LED lights tend to have the longest lifespan, often lasting tens of thousands of hours. HID lights also have a relatively long lifespan, typically around 3,000-5,000 hours of use.