About This GlowShift Tinted 7 Color Series On-Dash Tachometer Gauge with Built-In Shift Light is Designed to Display the RPM of Your 1-10 Cylinder Gas Engine Vehicle & Mounts on the Dashboard Tachometer Readings from 0 to 10,000 RPM - 3-3/4" (95mm) Diameter Gauge with a Black Dial, Illuminated Red Needle, Tinted Lens, Shift Light Adjustment Knob & Matte Black Trim Ring 7 Solid Color Modes & 2 Color Cycle Modes Allow You to Match Your Factory Dashboard Lights or Add a Custom Style to the Interior of Your Vehicle - Colors Include Blue, Red, Green, Teal, Purple, White & Yellow - Connecting the Dimmer Wire to the Headlight Switch Reduces Brightness of the Gauge by 30% When the Headlights are On Includes Built-In Shift Light, 2' Power Harness with 2' Signal Wire, Mounting Hardware & Step-By-Step Instructions that Help Walk You Through the Installation Process Established Since 2004, GlowShift Has Always Been Committed to Customer Satisfaction by Offering a One-Year Limited Warranty, Free Lifetime Technical Support & 30 Day No Hassle Returns with Each Purchase Overview Brand : GlowShift Material : Glass, Plastic, Stainless Steel Thread Type : 3.75 Inches Unit Count : 1.0 Count Number of Packs : 1