Feature:1. Monitor 40140 engine coolant temperature to prevent overheating and other potential engine problems.2. Red luminous pointer and blue LED display, clear and intuitive, seven color settings make reading at night easier.3. Supplied with 1/827 NPT electronic water temp sensor, 1.94ft power harness and installation manual, quick and easy to mount.4. Wide range of applications, universal for all 12V cars. Made of high quality plastic, rugged and durable.5. Manufactured according to the original production specifications, in line with strict quality standards.Specification:Item Type: Water Temperature Gauge (40-140)Material: PlasticUniversal for all 12V CarsDiameter: Approx. 2in/52mmCurrent: IGN Maximum 0.3A ILM 0.3APower: DC(10-15V) 12V ProfessionalWiring:Red Wire: PositiveBlack Wire: NegativeGreen Wire: Connect the water temperature sensor.Package List:1 x Water Temperature Gauge1 x Power Cord1 x Sensor1 x Manual