[How to install it ? ] Open a hole in the panel (Dimension -85mm / 3 3/8", Depth-2-3/4") , Then put the gauge in the hole and screw down.
[How to adjust backlight? ]Power on, then press the back SET button for 2 seconds, the backlight color will change in this order: Red(Default)-Green-Blue-White-Yellow-Kelly-Orange-Purple. Auto mode and Fix mode.
[How to use "TRIP01" "TRIP02" "COG"?] Press the back "MODE" button for 3 seconds to switch "TRIP01", "TRIP02" or "COG". "TRIP01"(Default): hour will be automatically cleared after power off, the data will not be saved;- "TRIP02": hour will not be automatically cleared after power off. Users need press the back "SET" button for 3-5 seconds to clear.
[GPS Speedometer keeps counting?] GPS speedometer needs to search for signal, keep the black GPS signal antenna connected all the time and make sure the gauge working outdoors, not in tunnels or enclosed areas around mountains.
[Widely used] Suitable for all cars, tractors, vans, vessels, boats, yachts, etc. IP68 Waterproof.