Raymarine Marine GPS System User Manual page 168

RayTech Navigator User's Guide
Connecting Directly to NMEA-Equipped Instruments
Most instrument systems are equipped to accept incoming NMEA data
from your GPS, and will output additional collected NMEA data, such
as vessel position, heading, speed, water depth, etc.
To connect Navigator directly to an NMEA-equipped instrument
system, refer to Figure A-1 and Table A-2.
Table A-2. Connecting Navigator Directly to NMEA-Equipped Instruments
Connect Cable Color:
A-4
Yellow (Rx)
Blue (SGnd)
Green (Tx)
Black (SGnd)
To NMEA Instrument Lead:
NMEA + output
(which may also be labeled TX, TX+,
Data Out+, or NMEA OUT+)
NMEA - input
(which may also be labeled RX-,
Data In -, or NMEA IN-, or Ground)
NMEA + input
(which may also be labeled RX, RX+,
Data In+, or NMEA IN+)
NMEA - output
(which may also be labeled TX-,
Data Out -, or NMEA OUT-, or Ground)