Garmin GPSMAP 720 Installation Instructions Manual - page 4
GPSMAP 700 Series Installation Instructions
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
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. Routethecableawayfromsourcesofelectronicinterferencesothatthecableconnectorisatthe
mountinglocationofthechartplotter.
2. Separatethetwohalvesofthelockingring.
3. Alignthetwohalvesofthelockingringoverthecableandsnapthemtogether.
4. InserttheO-ringintotheendoftheconnector.
GPSMAP 700 Series Power/Data Cable
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To transducer (if applicable)
Red
Black
Accessory on
Blue
Spare
Spare
Alarm low
Wire Color
Wire Function
Power (10– Vdc)
Ground
(power and NMEA 018)
NMEA 018 port 1 Tx (out)
Brown
Gray
Violet
Green
White
Orange
Yellow
To the GPSMAP 700
series chartplotter
Fuse A
NMEA 018 port 1 Rx (in)
NMEA 018 port Tx (out)
NMEA 018 port Rx (in)
Notes:
UseanAGC/3AG-3Ampreplacementfuse.
Ifitisnecessarytoextendthepowerandgroundwires,use16AWGwire.
Youcanwirethecabledirectlytothebattery,orifyourboathasanelectricalsystem,youmightbeabletowirethecabletoanunused
holderonthefuseblock.Ifyouusetheboatfuseblock,removethein-linefuseholderonthepowerwireofthecable.
Donotcutthetransducercable,becausethisvoidsyourwarranty.
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
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Installing the Locking Ring
Installing the Locking Ring