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1.6.8
Lamp and Horn Connections
The device can be used with a lamp, a horn, or both, to sound or flash an alert when the
chartplotter displays a message. This is optional, and the alarm wire is not necessary for
the device to function normally. When connecting the device to a lamp or horn, observe
these considerations.
• The alarm circuit switches to a low-voltage state when the alarm sounds.
• The maximum current is 1 A, and a relay is needed to limit the current from the
chartplotter to 1 A.
• To manually toggle visual and audible alerts, you can install single-pole, single-throw
switches.
Item
DC Power supply / battery
A
Power cable
B
Horn
C
Lamp
D
Relay (1 A coil current)
E
Toggle switches to enable and disable lamp or horn alerts
F
Item
Red
Black
Yellow
1.6
Cable and Connection Considerations
B
Wire Color
Power supply +
Power supply - / Ground
Alarm
A
E
Description
Wire Function
C
D
F
25
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