Waterproof Tachometer unit: RPM
Working Voltage: DC 12V
Size: approx 60mm (2-3/8″)*55mm (2-3/16″)
50mm (2″) mirror diameter, 62mm (2-7/16″) outer diameter
LED Indicator Display: Blue (speed), Red (fuel level)
Wire Connection: Red-positive, Black-negative, Yellow-oil sensor signal, Green- picks up speed signal
Instructions: Not included.

100% brand new
Lightweight & amp; portable circle design, LED digital display
Silver metal construction, weatherproof (with rubber seal)
High performance, tachometer and fuel gauge combined two in one.
Bright & accurate reading,can see real-time data clearly at all angles in dark

Tachometer installation and debugging method:
1.Connect the positive and negative pole to power supply correctly.
2.Turn on the electric door switch, tachometer will display to 0, and then let the signal line touch the positive pole of power supply. & nbsp; If the digital display changes, it can work normally.
3.Connect the signal cable, start the car, and then it can display speed.

Fuel gauge installation and debugging methods:
1.Connect the positive and negative pole to power supply correctly.
2.Turn on the electric door switch,fuel gauge displays a grid of red,and then connected signal line to the negative pole.   Wait for a while, LED light will all light up slowly, indicating normal operation.
3.Connect the signal line, fill up, slowly adjust the potentiometer to make all the LED lights on.
& nbsp; When oil runs out, slightly adjust potentiometer so as to make only one red LED light on. (Please note: The original fuel gauge can not be used together)

Package Included:
1-  2-in-1 Waterproof Tachometer fuel gauge + Cables + Bracket de montaje.