Garmin GPSMAP 2-Pin Power/Data Cable, For 8400/8600 Series, 6 ft
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Overview
The Garmin 010-12797-00 is a 6 ft (1.8 m) 2-pin power/data cable used to hardwire compatible GPSMAP chartplotters and bring out their NMEA 0183 data leads.
It plugs into the 2-pin power/data port on the back of the display and routes to your boat's power distribution and any NMEA 0183 devices you need to connect, such as an autopilot, VHF with DSC, or AIS.
Key features
- 6 ft (1.8 m) cable length for helm, console, and overhead electronics boxes
- 2-pin connector for GPSMAP chartplotters that use the 2-pin power/data port
- Power leads for hardwiring through a fuse or breaker sized for your chartplotter
- NMEA 0183 wiring is brought out on the same harness for one transmit and one receive port
- Garmin NMEA 0183 wire colors: Rx/A (In +) white/orange, Rx/B (In -) white, Tx/A (Out +) gray, Tx/B (Out -) pink, with black used as power and data ground
Compatibility and fit
This cable is used on GPSMAP units that take a 2-pin power/data plug. Common matches include GPSMAP 8410, 8412, 8416, 8610, 8612, and 8616 models, including xsv variants. The easiest check is the connector style on the back of your display and the accessory list in the installation instructions for your exact model.
Installation and wiring notes
Route the harness so it stays out of bilge water, avoids sharp bends, and is protected anywhere it could chafe on fiberglass or metal. Leave a small service loop behind the display so the unit can be pulled forward without stressing the connector.
For NMEA 0183 runs that need extra length, use shielded twisted-pair wiring and seal splices with solder and heat-shrink. Keep the chartplotter power ground and any NMEA 0183 device grounds on a common ground point, and do not tie the NMEA 0183 data wires into power ground.
If the connected device has only a single Rx input (no A/B or +/-), leave the Tx/B (pink) lead unconnected. If it has only a single Tx output (no A/B or +/-), connect the Rx/A (white/orange) lead to ground. Confirm the wire functions for the equipment you are integrating before finalizing connections.
Use on board
This is a good match for installations where the display is hardwired at the helm and you still need straightforward NMEA 0183 data sharing alongside networked electronics. It also helps on refits where existing NMEA 0183 wiring is already in the boat and you want clean terminations without adding extra adapters.
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