12V Chrome 2 in 1 LED Tachometer Gauge Fuel Oil Digital Motorcycle Gauge Combo

12V Chrome 2 in 1 LED Tachometer Gauge Fuel Oil Digital Motorcycle Gauge Combo Specification: Material:Metal Dimension: approx 62mm(Diameter)x52mm(Height) Color:Chrome Operating Voltage:DC 12V Wiring: Red=Positive，Black=Negtive，Green=Tachometer Signal，Yellow=Oil Signal Note: The original fuel gauge can not be used together Description: 100% Brand new & high quality, waterproof High performance, Tachometer and Fuel Gauge combined into one Easy installation and high accuracy Bright LED reads out, easy viewing at all angles during lighting conditions SMD chip electronic components, processed by automatic placement machine, stable operation, suitable for motorcycle modifying 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. If the digital display changes, it can work normally. 3. Connect the signal cable, start the Motorcycle, 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. When oil runs out, slightly adjust potentiometer so as to make only one red LED light on. Package Included: 1 x 2-in-1 Tachometer and Fuel Gauge