Specification:Product Name: Tachometer gaugeVoltage: 12VDiameter: 52mmIndicating Range: 0-6000 RPM (On dash)Length: 585mm/23inHouse Color: White & Black, Light Color: WhiteMaterial: Metal & PlasticQuantity : 1pcFitment: for 1-20 CylinderWire Installation:Yellow Wire(+): 12V dash lightingGreen Wire: Connector Oxygen sensor (Not Include)Red Wire: 12V Terminal on Ignition Switch (Or other Power Source)Black Wire (-): GroundedFeatures:- Interior Diesel Gauge.- No vibration when driving.- Bright White LED illumination for night driving.- The Product arrived with wires to connect the gauge to your car.- The Clock designed With black Faceplate and Clear lens..- Tachometer gauge for Diesel Clock Gauge with White LED color.- Please note that this gauge is for interior usage and not water proof.Fitment:For Diesel Motor EnginePackage:1x Electrical Tachometer Gauge1x Cable1x Installation InstructionAttention:1.We provide clear pictures, measurements where possible. Please check as much as possible to make sure the item is the one that you need.2.Please allow 0.5-1 inch difference due to manual measurement.(1inch=2.54cm)3.Although instruction is included.Professional Installation Is Highly Recommended (