Northstar Explorer 538i/538 Installation and Operation Manual
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Power/data cable
Red
Yellow
Black
External beepers or
lights
Main switch
12 V DC]
Fuse 2A
The power/data cable has a black locking collar and flying leads.
1 Wire the Explorer 538/538i for auto power to have the Explorer 538/538i turn on with the boat’s
ignition switch or to to record engine hours or if the Explorer 538/538i must add up the total fuel
used (for example if Northstar petrol/gasoline fuel sensors are installed or if SmartCraft is installed
without fuel tank level sensors). Otherwise wire for basic power (for more information, see section
2-2).
Basic power
Auto power
During setup, set up Auto power off (see sections 2-3 and 17-1)
Power/data cable
Yellow
Red
Black
Ignition
Ignition switch
Main switch
12 V DC]
Fuses 2A
Power/data cable
Red
Green
2 Wire any external alarm beepers or lights.
The alarm output switches to ground to
sound the alarm. If the current is more than
200 mA, fit a relay.
3 Connect the power/data cable to the black
display unit connector; turn the collar to
lock the connector.
Black
Black
Black
15-4 Installation: Power/Data cable
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