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To power a
NMEA 2000
buss, also
connect NMEA
2000 Power
cable to a
switched
power source.
Data Cable
Power connections for LMS-334c iGPS and LMS-339cDF iGPS units.
NOTE:
If you are powering a NMEA 2000 buss, you will attach both the
NMEA 2000 Power cable and the unit's Power Supply cable to an
electric power source.
WARNING:
This product must be independently fused with the en-
closed 3-amp fuse (or equivalent), even if you connect to
a fused accessory or power buss.
If a malfunction happens inside the unit, extensive dam-
age can occur if the enclosed fuse is not used. As with all
electrical devices, this unit could be damaged to a point
that it is unrepairable and could even cause harm to the
user when not properly fused.
CAUTION:
Do not use this product without a 3-amp fuse wired into the power
cables! Failure to use a 3-amp fuse will void your warranty.
This unit has reverse polarity protection. No damage will occur if the
power wires are reversed. However, the unit will not work until the
wires are attached correctly.
GPS Internal Antenna
The unit has a built-in 12-parallel channel GPS + WAAS antenna.
NMEA 2000 Cable Connections
NMEA 2000 is a new buss network specifically designed for boats. This is
a very young industry standard and, at the time of printing, few boats
being built now have a NMEA 2000 buss installed. Over the next few
To unit
Mandatory
network
power-off
switch
NMEA 2000 Power Cable
External speaker wire
(not used by this unit)
Black wire
Optional power-off
switch for salt-
water installations
32
Red wire with
3 amp fuse
12 volt
battery
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