If the fuel gauge on your boat is not working correctly you could get stuck out on the water. Connect ground wire to 14 fasson terminal on sender.
5915a Fuel Gauge Wiring Diagram Boat Fuel Gauge Wiring
Wiring a fuel gauge on a boat. Check the wiring diagram that comes with the kit and mark the back of the new fuel gauge with symbols for each post. Wiring a fuel gauge is much the same as wiring any other gauge on your boat. Install the new gauge reconnect the wiring and turn on the power. One wire comes from the ignition to the instrument one wire comes from the sensor to the instrument one wire comes to the instrument light and one wire from the instrument goes to the boats common ground. The fuel gauge should now show the correct fuel level in. Turn the ignition key to on or otherwise energize your gauge panel so that the fuel gauge is operable.
It would not be fun to paddle your way in from a mile out or perhaps even farther. Get a new one. Using the barrel of a screwdriver or a jumper wire connect jump the senders connection to the ground connection. Empty tank of fuel and fumes before continuing with installation. You might think that you need to haul your boat off to the repair shop to have the gauge fixed but you can troubleshoot the gauge right in the water with the help of a. For the fuel gauge its best to remove it from the tank and manually work the float mechanism to see if the gauge then moves.
Proper wiring installation see figure 5. Whether the connection to the fuel gauge is a clip connection or a screw connection spray it with vinyl electrical insulator spray after making the connection. Connect sender wire from fuel gauge to the threaded screw terminal on sender. Gasoline is extremely flammable. If not unplug the pink wire and connect it to a known good ground like your engine block or the negative terminal on your battery. If the gauge then reads full scale then the problem was with your sender.
Connect a yellow 14 gauge ground wire from the negative terminal on the gauge to your boats common ground or common grounding buss. Keep tank area free from sparks and flames. Samdo digital fuel level gauge universal fuel meter signal adjustable 7 color backlight 52mm 12v24v 0 190ohm 240 33ohm 240 30ohm 0 180ohm 10 180ohm 41 out of 5 stars 17 2350 23. S for the sender g or for the ground and i for the ignition.