Features: 1.Numbers and pointer clearly show the water temperature 2.Blue LED light for easy reading in the darkness 3.Measurement range is 20~120 Celsius Degree 4.High sensitivity and easy operation 5.Used to measure the water temperature of automobile Specification: Features:_x000D_ _x000D_ Numbers and pointer clearly show the water temperature. _x000D_ Blue LED light for easy reading in the darkness. _x000D_ Measurement range is 20~120 Celsius Degree. _x000D_ High sensitivity and easy operation. _x000D_ Used to measure the water temperature of automobile. _x000D_ _x000D_ Specifications:_x000D_ Material: Stainless Steel_x000D_ Color: As Picture Shown_x000D_ Measuring Range: 20-120_x000D_ Input Voltage: 12 V DC_x000D_ _x000D_ Size: Approx. 8 x 7 x 6cm/3.15'' x 2.75'' x 2.36'' _x000D_ Temperature Sensor Total Size(L*W): Approx. 41.68*12.83mm/1.64*0.51in_x000D_ _x000D_ Temperature Sensor Thread Size(Diam. * L): Approx. 9.46*9.8mm/0.37*0.39in_x000D_ _x000D_ Wire Connection: Red for Positive, black for negative_x000D_ Package Weight: Approx. 280g_x000D_ Fitment: For 12 V autos and racing cars_x000D_ _x000D_ _x000D_ _x000D_ Wiring Method:_x000D_ A Set of 4 Wires:_x000D_ 1. Red wire connects + 12V power supply._x000D_ 2. White wire connects the headlight switch + 12V._x000D_ 3. Yellow wire connects the ignition switch._x000D_ 4. Black wire connect the storage battery or car shell._x000D_ A Set of 2 Wires:_x000D_ 1. Green wire is signal line to connect the sensor._x000D_ 2. Black wire connects the ground wire._x000D_ (The last wire is a spare one for similar item connection.)_x000D_ _x000D_ Back Sockets Instruction:_x000D_ 1. 2-pin socket links to external warning light(this item not includes the warning light)_x000D_ 2. 3-pin socket adapts to signal line._x000D_ 3. 4-pin socket is for battery connection. (When there are two 4-pin sockets, you only need to choose one to connect the power, and the rest socket is ready for other similar item without linking the power again)_x000D_ _x000D_ Package Included:_x000D_ 1 x Water Temperature Meter_x000D_ 1 x Bracket_x000D_ 1 x Sensor_x000D_ Other Accessories PackageList: