GlowShift Tinted 7 Color Series Oil Pressure Gauge is Designed to Monitor Display the Amount of Oil Pressure Running Through Your Car or Trucks Engine Oil Pressure Readings from 0 to 100 PSI 2116 52mm Gauge with Black Dial, Tinted Lens Illuminated Red Needle 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 1827 NPT Pressure Sensor, 9 Sensor Harness, 2 Power Harness, Gauge Visor, Mounting Hardware Installation Instructions GlowShift Guarantee with One Year Limited Warranty Free Lifetime Technical Support