Garmin GPSMAP 740s Installation Instructions - Page 4

Installing the Power/Data Cable The chartplotter comes with a power/data cable that connects the chartplotter to power and to optional NMEA 0183 devices. If applicable, the power/data cable also connects the chartplotter to a sonar transducer. The power/data cable does not connect the chartplotter to a NMEA 2000 network. For instructions on connecting the chartplotter to a NMEA 2000 network, see page 6. To help make the cable-routing process easier, the locking ring is packaged separately from the cable. If you install the power/data cable through the bail mount, do not install the locking ring until after all the cables are routed. Installing a locking ring on the cable: 1. Route the cable away from sources of electronic interference so that the cable connector is at the mounting location of the chartplotter. 2. Separate the two halves of the locking ring. 3. Align the two halves of the locking ring over the cable and snap them together. 4. Insert the O-ring into the end of the connector. Installing the Locking Ring Wire Color Wire Function To the GPSMAP 700 series chartplotter 3FAuse Red Black > Blue Brown > Gray Violet Power (10-32 Vdc) Ground (power and NMEA 0183) NMEA 0183 port 1 Tx (out) NMEA 0183 port 1 Rx (in) NMEA 0183 port 2 Tx (out) NMEA 0183 port 2 Rx (in) > > Green White Orange Yellow Spare Spare Accessory on Alarm low To transducer (if applicable) GPSMAP 700 Series Power/Data Cable Notes: • Use an AGC/ 3AG - 3 Amp replacement fuse. • If it is necessary to extend the power and ground wires, use 16 AWG wire. • You can wire the cable directly to the battery, or if your boat has an electrical system, you might be able to wire the cable to an unused holder on the fuse block. If you use the boat fuse block, remove the in-line fuse holder on the power wire of the cable. • Do not cut the transducer cable, because this voids your warranty. Notice The maximum input voltage is 32 Vdc. Do not exceed this voltage because this can damage the chartplotter and void the warranty. NOTE: If you are not connecting the chartplotter to NMEA 0183 devices, use only the red and black wires. The other wires do not have to be connected for normal operation of the chartplotter. For information on connecting to a NMEA 0183-compatible device, see page 5.  GPSMAP 700 Series Installation Instructions