Correct installation is critical to the performance
of the Explorer 443d/443df. There are two
components to install, the display unit and the
6 Installation and Maintenance
transducer. It is vital to read the entire installation
section of this manual before attempting to
install the components.
1 Amp fuses must be positioned where
shown in the wiring diagrams.
The power/data cable contains 5 wires:
Wire Function
Black
Ground (power negative)
White* NMEA
out
Red
Positive power in, 12 V DC
Yellow
Auto power in (connect to red
wire. Positive power in, to enable
Auto
power).
Green*
External beeper or light out,
switched to ground, 30 V DC 200
mA
maximum.
Note:
The cable shield is connected to Pin 1 (black
wire) and does not need to be grounded. *
Denotes Explorer 443df only.
Six wiring options are described in this section:
•
Basic wiring.
This does not start the
fishfinder automatically when the boat
ignition is switched on and it disables the
engine hours counter.
•
Auto power wiring.
This must be used for
the engine hours and fuel computer options.
•
Secondary Alarm wiring
•
NMEA wiring
•
Single engine fuel wiring
•
Twin engine fuel wiring
Note:
If a wire color is not specifically mentioned, it is
not used in that wiring option.
Section 6-5 Systems of several instruments,
describes NMEA and NavBus.
Wiring Options
Fuse
Red
Yellow
Black
Main
switch
12 V DC
Basic wiring
This requires the Explorer 443d and Explorer
443df to be powered on manually with the
key.
Black wire
: Connect this to the negative battery
terminal.
Red wire
: Connect this to the positive battery
terminal after the main switch. Fit a 1 Amp fuse
as shown.
Yellow wire
: Connect this to the black wire. This
disables the engine hours counter.
Basic wiring
Power on the fishfinder manually whenever the
main switch is on.
White Wire
: Use this, if desired, to connect the fishfinder to other NMEA instruments such as Northstar’s
Explorer R310. (See section 6-5 Systems of several instruments.)
NMEA wiring Option (Explorer 443df only)
CAUTION
Northstar
Explorer 443d/443df
Installation and Operation Manual
29
Summary of Contents for EXPLORER 443D
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