GlowShift's Elite 10 Color Series 3-3/4" In-Dash Speedometer includes some ultra-high performance features, making it perfect for anyone building a custom dash or replacing their stock speedometer. This speedometer reads from 0 to 140 MPH, and features a digital LED display with two resettable trip meters. This 3-3/4" (95mm) speedometer offers ultra-high performance features like, a peak recall function, two programmable warning functions, stepper motor technology, 10 color through dial LED lighting, as well as a self-calibration mode at startup, an illuminated red needle, and a low profile magnified tinted lens. The two adjustable warning functions will alert you visually or with an optional audible tone, and the peak recall function gives you instant vehicle feedback after you're done your run. The included stepper motor allows all needle movement to be incredibly smooth and all gauge readings to be exceptionally accurate. GlowShift's 10 color through dial lighting allows you to match your stock gauges or add a custom look to your vehicle's interior, and with the color recall feature you won't have to worry about resetting the gauge to your preferred color every time your vehicle is turned on. This in-dash speedometer will also dim 30% when connected to your factory headlight switch, making it easy to read while driving at night. GlowShift's Elite 10 Color Series 3-3/4" In-Dash Speedometer can be mounted into your factory or custom dashboard with the included mounting bracket, and is installed by connecting the included color coded wire harness to your speed sensor signal. For vehicles with a cable driven speedometer, an electronic speed sensor may be required; if you have vehicle specific installation questions please contact our technical support department. The included wire harnesses are completely plug and play, and securely snap into the back of the gauge with the featured modular connectors.