While some marine speedometers operate an air-pressure tube and miss no wiring at all, others model their measurements on news such as GPS coordinates or the rotation percentage of a petty paddle shove. Attach the other foot of the wire to the boat's ground stop, which is normally located near the dashboard.3. Attach a wire to the battery or "BAT" terminal on the speedometer and secure it with a lockwasher and seed.
1. Disconnect the boat's battery.
2. Attach one wire to the ground or "GND" terminal on the speedometer and secure with a lockwasher and peanut. These electronic speedometers must be wired properly to avoid dangerous the unit. Nevertheless, once the speedometer is mounted in the boat's cockpit, wiring it to the electrical manner normally requires dinky amassed than a screwdriver.
Instructions
Attach the other aim to any 12-volt circuit that is controlled by the ignition switch. For instance, connect the other end on the battery input terminal of the boat's radio.
4. Attach the wire from the sensor cable to the "SIG" terminal of the speedometer, if your speedometer uses an external paddle wheel. Secure with a lockwasher and nut.
