ELING GPS Speedometer 125MPH Odometer 85mm for Car Boat 12V 24V with Red and Yellow Backlights

Open a 85mm (3 3/8") hole in the dashboard and allow a clearance of 55mm( 2 3/16”) behind the panel to fit the gauge Connection: Black wire-GND, Red-power(+), White-external button(+), Red/Yellow-Backlight, Blue-Left turn, Green-Right turn, White wire-High Beam 9-32V Working Voltage, Red and Yellow backlights available, Indication light: LEFT, HIGH BEAM, RIGHT Securely fasten GPS antenna, preferably outdoors (or inside front windscreen) so that it has a clear view of the sky to pick up satellite signal. Connect the antenna cable to socket in the back of the gauge. Do not cut cable OverSpeed Buzzer Alarm, Total Mileage Range: 0-999999 miles