Unity Manufacturing Co. is the world's largest producer of post-mount spotlights and a trusted OEM supplier of auxiliary and emergency lighting for automotive, truck, and specialty vehicles. Since 1918, Unity has delivered high-performance lighting solutions including roof-mount spotlights, fog lights, driving lights, deck lights, work lights, and custom wire harnesses. Designed and assembled in Chicago, Unity products are built for durability, precision, and visibility in demanding environments. See below for our current inventory of Unity spotlights and lighting accessories.