Car tyre Led light is easy to install just Simply screw it onto the tire valve. Twist off your original valve cap, and replace it with this valve cap LED light. Installs on standard tire air valves of cars. No battery connection required:- No need to connect to the vehicle’s battery. It lights up itself using high-quality metal gold-plated, inner zone button batteries. It lights up itself using high-quality metal gold-plated, inner zone button batteries.