Cut an 85mm (3 3/8") hole in the panel and allow a clearance of 70mm (2 3/4”) behind the panel to fit the gauge. Put the gauge in the hole and screw down.
For the GPS antenna, you should securely fasten it in the flat position, black side upwards, preferably outside (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. And do not cut cable.
It shows Current Speed, TRIP/COG(choose one), ODO(cannot be reset). If you need other color faceplate, pls. search for ASIN B07DY4T8ZG or B07DY13TC3
Backlight: Red Green Blue White Yellow Kelly Orange Purple or automatic
9-32VDC(12VDC/24VDC) Working Voltage, 100% Waterproof and anti-fogging protection