Feature 1, 8~18V measurement, shift light volts is adjustable. 2, 64 color LED backlight LCD display, display voltage clearly even at night. 3, The gauge dial and the needle pointer provide high visibility. 4, High reading capacity and practical, could match and replace original equipment perfectly. 5, Durable metal and plastic housing, shockproof and corrosion resistant.Features: 8~18V measurement, shift light volts is adjustable. 64 color LED backlight LCD display, display voltage clearly even at night. The gauge dial and the needle pointer provide high visibility. High reading capacity and practical, could match and replace original equipment perfectly. Durable metal and plastic housing, shockproof and corrosion resistant. Universal fit for most auto racer car of DC 12V. The red triangle can be used as a limit mark such as speed limit, not as warning indicator. To move the position of the red triangle, remove the bezel once and then adjust the position and attach it again. Specification: Condition: 100% Brand New Shell Material: Plastic Shell Color: Black Working Voltage: 10-16V (only for 12V vehicles) Measurement Range: 8~18V Working Current: Red Wire: Max. 200A (ignition switch closed) Max. 0.2mA (ignition switch disconnected) White Wire: Max. 0.5mA Storage Temperature: -30-22~+80 Working Temperature: -30-22~+60 Shell Diameter: 7cm / 2.8in Shell Height: 6.5cm / 2.6in Package Weight: approx. 294g/10.4oz Wiring Connection: Red + B(Battery to 12V battery wire) Yellow + ING(ignition to 12V wire while ignition is on ) White + ILM(Illuminatio to 12V wire while small light is on) Black +GND(Earth to ground ,negative battery terminal) Bracket Installation: 1. Open the box, take out double-sided tape and stick it on the bottom of the bracket. 2. Insert the protruding part of the mounting bracket into the instrument cup, and connect the mounting bracket to the instrument cup using the bolts, nuts and washers included in the kit. 3. One to two pieces of double-sided adhesive are attached to the aluminum case and connected to the instrument as a buffer. 4. Wire the instrument through the instrument cup hole and connect them to the instrument. 5. Put the meter into the instrument cup to make sure the wire is not caught in the middle. 6. Paste double-sided tape on the back of the mounting bracket, and bend the mounting bracket to meet the position you want to install. Package list: 1 * Voltmeter Gauge 2 * Power Cable 1 * Mounting Set 1 * User Manual Note: Professional installation is strongly recommended to avoid trouble or damage caused.