is a widely used book reading light, wall light, spot light, overhead light for vehicles with a 12volt DC is a nice decoration as quality LEDs create soft cool white light without glare for reading. Feel free to direct the light to different position with the swivel on/off switch is convenient for control. Shockproof design makes it perfect for a moving s lifespan is more than 50,000hours. It is more durable than other lighting source like mount installation. Wiring: black wire for positive and white wire for negative/ground.