User`s manual

Interfacing RNS 27
Connecting directly to an autopilot
The following cabling instructions apply to most autopilot systems, however, you
should also refer to the Manufacturer’s handbook that came with your autopilot.
Your autopilot must support NMEA 2.3 strings APA or APB.
To connect RNS directly to an autopilot:
Connect the cables as follows:
Cable color Autopilot lead
Yellow (Rx) Not used
Black (SGnd) Not used
Green (Tx) NMEA + Input
may also be labelled Rx, Rx+, Data In+, or NMEA IN+.
Black (SGnd) NMEA - Input
may also be labelled Rx-, Data In-, NMEA IN-, or Ground.