Projector lighting solutions are legal in all countries due to the technology enhances focussed light on the road, where it is needed, instead of glaring light in the face of oncoming traffic.
Projector lamps mainly come with LED chipsets, which consume less power and produce 3 to 6 times more light than original car lighting setup, without creating disturbance for others on the road.
These headlamp upgrade kits comprise of a projector lens housing with plug and play harness / wiring kit to integrate them into almost any car without cutting any original wiring harness. Hence, not losing wiring warranty on car. The only permanent modification is the original headlamp housing which has to be opened up, and retrofit installation has to be done for the new projectors, along with proper alignment.