Garmin 4-Pin Power/Data Cable, For echoMAP Series, NMEA 0183 I/O
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Overview
The Garmin 010-12199-04 is a 4-pin power/data cable used to hard-wire a compatible Garmin display while also giving you NMEA 0183 input and output leads for basic data sharing on board. The harness is 6 ft (1.8 m) long, which is typically enough to run from a helm mount to a nearby distribution panel or behind-console wiring space.
It is commonly used when you want a clean permanent install and need both power and a simple NMEA 0183 link, such as exchanging position or navigation data with another NMEA 0183 device. One end plugs into the unit’s 4-pin power/data port, and the opposite end is for terminating to your boat’s DC supply and any NMEA 0183 connections per your system plan.
Key features
- 4-pin connector for Garmin units that use a 4-pin power/data port
- 6 ft (1.8 m) overall cable length for typical helm and console routing
- Single harness carries both power and data, keeping the installation simpler than separate runs
- Includes NMEA 0183 input and output conductors for interfacing with NMEA 0183 electronics
Compatibility and fit
This cable is used across many Garmin echoMAP models and other Garmin fishfinder or chartplotter families that specify a 4-pin power/data connection. Before ordering, confirm your unit has the matching 4-pin port, since some Garmin models use different connector styles and this is not a transducer cable.
Installation and setup
Plan the route so the connector end reaches the display without strain, and keep the run away from sharp edges, moving parts, and high-heat areas. Terminate the power leads to a properly protected DC circuit and follow your display’s installation guide for fuse or breaker sizing, wire gauge, and any required grounding practices.
Electrical and system integration
The NMEA 0183 conductors are intended for point-to-point data connections, so wiring details depend on what you are linking and which sentences you need to pass. If your boat uses NMEA 2000 networking, that backbone uses separate cabling, while this harness handles power plus NMEA 0183 in and out where needed.
Use cases on board
This is a good match for a helm install where the display is hard-wired and you want a straightforward way to bring in or send out NMEA 0183 data without adding extra adapters. It also fits refits where an older 4-pin power/data harness needs replacement after years of heat, vibration, and salt exposure.
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