These mustang gauge inserts will give your dashboard a whole new look and feel. At night, choose between green or blue to light up your mustang gauges. This mustang gauge kit is available for 99-04 GT's, and comes complete with dimmer adjuster, 150mph speed, and 8000rpm redline. Light up the night, and feel the glow from your brand new Mustang GT Nite-Glow Gauge Inserts.Aluminum gauge insert optional. Note: Please read the instructions before installing.