Garmin COMPACT REACTOR 40 Installation Instructions Manual page 17

Building a Basic NMEA 2000 Network for the Autopilot System
If you are installing a NMEA 2000 power cable, you must connect it to the boat ignition switch or through
another in-line switch. NMEA 2000 devices will drain your battery if the NMEA 2000 power cable is connected to
the battery directly.
A dedicated helm control is not included in all autopilot packages. If you install the autopilot without a dedicated
helm control, the autopilot CCU must be connected to the same NMEA 2000 network as a compatible Garmin
chartplotter to configure and control the autopilot system.
1 Connect the three T-connectors
2 Connect the included NMEA 2000 power cable
You should connect the power cable to the ignition switch of the boat if possible, or route it through an inline
switch (not included).
NOTE: The braided drain wire (bare) on the NMEA 2000 power cable must be connected to the same ground
as the black wire on the NMEA 2000 power cable.
3 Connect the NMEA 2000 power cable to one of the T-connectors.
4 Connect one of the included NMEA 2000 drop cables
(optional) or to a compatible Garmin chartplotter
5 Connect the other included NMEA 2000 drop cable to the other T-connector and to the CCU
6 Connect the male and female terminators
NOTICE
together side-by-side.
to a 9 to 12 Vdc power source
to one of the T-connectors and to the helm control
.
to each end of the combined T-connectors.
through a switch .
.
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