1.Easily display at night:Our Tachometer Gauge is highly visible with a RED Light,easy viewing at all angles during any lighting conditions,practically and safely when driving at night 2.WATERWICH Tachometer Gauge Reads Vehicle's RPM from 0 to 9999,Electric instruments provide quick and accurate readings,The warning lamp above 5000 rpm will light up 3.LED displays provide precise reference to critical operating conditions and alert driver of potentially damaging operating conditions,simple to install and direct replacement 4.Our gauge kit includes: instrument,harness and instruction,High sensitivity and Easy installation:Our gauge includes electric wire with necessary mounting and installation hardware,no need other sensor 5.Power supply: DC (10-15V) 12V 0.3A (maximum),Diameter 2 "52mm automobile universal digital tacho meter,Wide Compatibility for Car,SUV,Truck,Vehicle Automotive etc