Simrad GO7 - Basic GO7 Operation; System Controls Dialog; Turning the System On and Off

For sirens that draw more than 1 Amp, use a relay.
Connecting control devices
The GO7 can be controlled with an OP40 keypad.
Ú
Note: An OP40 is required for Autopilot setup.
NMEA 2000 – connection to backbone
Device connection
The GO7 is equipped with an NMEA 2000 data port, which allows
the receiving and sharing of a multitude of data from various
sources.
18
Wiring | GO7 Installation Manual