GPSMAP 12x3 Connector View
POWER Power and NMEA 0183 network
SONAR 12-pin transducer (Not available on all models)
HDMI HDMI
®
video out
CVBS IN Composite video in
USB Micro-USB for compatible Garmin card reader
Ground screw
NETWORK Garmin Marine Network
NMEA 2000 NMEA 2000 network
J1939 Engine or J1939 network
2 microSD memory card slots, 32 GB max.
Contacting Garmin Support
• Go to support.garmin.com for help and information, such as product manuals, frequently asked questions,
videos, and customer support.
• In the USA, call 913-397-8200 or 1-800-800-1020.
• In the UK, call 0808 238 0000.
• In Europe, call +44 (0) 870 850 1241.
Software Update
You may need to update the chartplotter software after installation. For the instructions on how to update the
software, see the owner's manual at garmin.com/manuals/GPSMAP7x3-9x3-12x3.
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