52mm Digital Pointer Car Boat Voltmeter Motor Auto Volts Indicator Voltage Gauge 12V/24V Car Volt Gauge 8~16V with 7 Colors Backlight Specifications: * Name:52mm Voltmeter* Bezel Materials: Stainless Steel * Install Diameter: 52mm(2-1/16"'""'") * Operating Voltage:9-32VDC * Measurement Rane:8~16V * Backlight:7 colors backlight * Grade Of Protection :Completely waterproof * Blacklight Color:red (default) green blue white yellow green orange Purple Olive(automatic). * Voltmeter Gauge Support :Boat ,Car , Motorcycle *Voltage Meter fit for Car , Boat ,Motorcycle Connection: Black: Ground(-) Red: 9-32VDC Blue: Signal Input Yellow: Backlight White: Reserve up to: 36V ( 1 min)). Package Included: 1xVoltmeter 1xWiring Harness 1x Instruction Manual Wholesale and drop