Chrono Series 8-18V Voltmeter Gauge by Auto Meter Keep tabs on the health and output of your vehicles electrical system safely and accurately with AutoMeters ultra precise Digital Stepper Motor Voltmeter. With precise resolution and ultra smooth needle movement, this gauge operates anywhere from 8-18 volts on negative ground electrical systems. A direct plug in wiring harnesses included for ease of installation. Features Unique three dimensional dial design gives added depth and style to your custom dash Over 320 of pointer movement adds dial scale and resolution, providing the most accurate reading in an analog dial Features metric and imperial scalings for easily relatable readings on applications around the world without the need for mental unit conversions Modern white LED through-the-dial lighting provides clear visibility during nighttime use Gauge kit includes wiring harness, mounting hardware, and detailed instructions for installation AutoMeters race proven digital stepper motor electric instruments provide unmatched accuracy which is further increased by utilizing a self calibration sequence during power up 12 and 16 volt compatible, compatible with nearly every street car or race car electrical system Applications Universal Specifications Size: 2-1/16″ (52.4mm) Type: Digital Stepper Motor Range: 8-18V Lighting: LED What’s In The Box? 1 – Chrono Series Voltmeter Gauge 1 – Wiring Harness Mounting Hardware Install Instructions References Installation Instructions Warranty Manufacturer Standard Warranty