User's Manual

If you do need to power your NMEA 2000 bus, attach the NMEA 2000

Power cable to an accessory switch as indicated in power diagram A on

page 32. The NMEA 2000 Power cable's red wire should be attached

(with provided 3-amp fuse) to the positive (+) terminal. The NMEA

2000 Power cable's black and shield wires should both be attached to

the negative (–) terminal.

WARNING:

The NMEA 2000 network bus is always on and constantly

drawing power. You must connect NMEA power to a

switched power source so you can turn off the network

when not in use. Failure to connect to and use a power

switch will drain your boat battery, which could stop

your boat's operation.

GPS Antenna/Receiver Module

The LMS-520c and LMS-525cDF packages include the LGC-3000 GPS

module. This device contains the unit's external antenna and receiver

for GPS and WAAS signals. The antenna/receiver module comes with a

15-foot extension cable. This module can be mounted on a flat surface

or pole, or an optional magnet is available for temporary mounting on

any ferrous surface.

You need to select an antenna installation location that has a clear, un-

obstructed view of the sky. After the module is installed, connect it to the

unit. The LGC-3000 can communicate with your GPS unit either directly

(using the supplied extension cable) or through a NMEA 2000 network.

LGC-3000 Module, bottom view (left) and top view (right).

NOTE

See the module’s instruction sheet, publication part number 988-

0154-651, for complete installation instructions.