Garmin Power/Data Cable - 4-Pin

The Garmin Power/Data Cable – 4-Pin (MPN 010-12199-04) is a 6-foot integrated power and data cable designed to connect compatible echoMAP series marine electronics to external power sources and networked systems. This cable handles both 12/24VDC power delivery and NMEA 0183 serial data transmission, making it essential infrastructure for multi-device marine installations where chart plotters need to communicate with external sensors, sonar modules, and autopilot systems.

The 6-foot length provides flexible routing through typical helm installations without requiring splitter cables or expensive extension harnesses. The 4-pin connector specification ensures compatibility across the echoMAP product line while the NMEA 0183 input/output capability allows real-time data exchange—critical for scenarios where your primary chart plotter needs to receive heading data from a compass, sonar returns from a transducer, or provide waypoint data to a networked autopilot. This cable is a direct OEM replacement part with the same connector tolerances and pinout as factory-original equipment.

This cable is required for anyone expanding an echoMAP chartplotter system beyond a standalone installation. Recreational and commercial marine operators, fishing guides setting up integrated sonar networks, and vessel owners integrating autopilot systems will find this cable indispensable. OEM cables are preferable to aftermarket alternatives because the NMEA 0183 protocol is sensitive to impedance matching and connector quality—poor-quality third-party cables can introduce data errors or intermittent connectivity that compromise navigation and sonar reliability.