Keep tabs on the health and output of your vehicles electrical system safely and accurately with AutoMeters ultra precise Digital Voltmeter. With precise resolution down to a tenth of a volt, this gauge operates anywhere from 8-18 volts on negative ground electrical systems. A direct plug in wiring harnesses included for ease of installation.Feature Points- Features AutoMeter's E-Z View Digital LED Display System which maximizes readability and minimizes distracting high speed digit changes- 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- Registers voltage down to a tenth of a volt