Use the male or female NMEA 2000 field-installable connectors to create custom-length drop cables and backbone extension cables. In hard to access areas, make it much easier to run NMEA 2000 cables, by cutting off the original end connector, running the cable and then installing a NMEA 2000 field-installable connector. Use at the foot of the mast for easy connection/disconnection, of the mast cables for mast mounted NMEA 2000 sensors, to the backbone. For NMEA 2000 pinout information, see the pinout image in this listing. This is the FEMALE connector. Use the male or female NMEA 2000 field-installable connectors to create custom-length drop cables and backbone extension cables. These connectors (each sold separately) can also be used to shorten any NMEA 2000 drop/backbone cable. In hard to access areas, make it much easier to run NMEA 2000 cables, by cutting off the original end connector, running the cable and then installing a NMEA 2000 field-installable connector. Use at the foot of the mast for easy connection/disconnection, of the mast cables for mast mounted NMEA 2000 sensors, to the backbone. This is the FEMALE connector.