Features: 1.Monitor 40?140 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 1/8?27 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: Plastic Universal for all 12V Cars Diameter: Approx. 2in/52mm Current: IGN Maximum 0.3A ILM 0.3A Power: DC(10-15V) 12V Professional Wiring: Red Wire: Positive Black Wire: Negative Green Wire: Connect the water temperature sensor PackageList: 1 x Water Temperature Gauge 1 x Power Cord 1 x Sensor 1 x Manual