Easy to install, suitable for all 12V motorcycles. It is more suitable for Vintage motorcycles and customized motorcycles.Specifications:Product model:Black: sms-004-220km/h-bkChrome plating: sms-004-220km/h-ch (our internal model)Product type: Motorcycle speedometerShape: circleCondition: 100% brand new and high qualityMaterial: stainless steel, high-definition glass lens.Shell color: Black / chrome plated (customized)Working voltage: DC 12VTransmission ratio: 1:1400Speedometer unit: km/h;Odometer unit: kmOdometer measurement: 0-220km/h; 0-136 mphMirror diameter: 6.5cm/2.5Diameter of mounting hole: 8mm / 0.31Package size: 90 ninety 90mmGross weight: 273gAccessories: General accessories for all motorcyclesInstallation method: direct replacement, plug and play.Wiring mode:The black wire is connected to the negative pole / ground wire; The black and yellow wire is connected to the oil line; The green brown wire is connected to neutral; The light blue line is connected to the turn signal lamp;The blue line is connected to the high beam; The black-and-white wire is connected to the negative pole; Red wire connected to instrument panel lampPackage include:1*Motorcycle speedometer1*V-shaped instrument support