Carxtc 9 inch, Blue Neon Light Rods - Make your car interior glow - Built in 12 volt Transformer Recommend mounting under the seats, or under the dash. You could also highlight your amp and speakers. Neon bulbs look smoother then led bulbs when mounted in a car Two Wire connection  One wire to cars battery or other source and one to ground. Add a toggle , wireless remote, or tap into a switched power source in your car Lighted area is about 4 inches smaller than the total size listed. The tubes are 1 inch thick