Auto Meter 1293 Designer Black II 2-1/16" 8-18 Volt Short Sweep Electric Voltmeter Gauge Modern white LED through-the-dial lighting provides clear visibility during nighttime use 12 and 16 volt compatible, well-suited with nearly every street car or race car electrical system Gauge kit includes mounting hardware and detailed instructions for installation Auto Meters race proven air-core electric instruments provide quick and accurate readings