In recent years, car headlight technology has advanced significantly. Old halogen bulbs gave way to LEDs, HIDs, and even lasers on high-end vehicles. All of these lights are more potent than standard headlights, require less energy to operate, and have a more stylish appearance. They appear to be an easy improvement for practically any car, to put it briefly.
The issue is that it is illegal to install H7 LED bulbs into vehicles that did not come equipped with such headlights from the factory. Additionally, since H7 LED lights installed as stock on a car must be changed by a qualified dealer, these bulbs can only be utilized under specific conditions.
The H7 LED bulbs should ideally only be used off-road and on circuits. Therefore, if you own a track car that isn’t used for driving or a 4×4, you should consider switching to H7 LED bulbs.

How do I install H7 LED bulbs and what does the term LED H7 mean?
Depending on their function, headlight bulbs are available in various designs. The designation H7 simply denotes that these bulbs have a single filament and two poles on the back.
Here is a general instruction on how to replace the bulbs. Of course, every automobile is unique, therefore there will be some variance in how to put the bulb. But always start with the manual for your vehicle.