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 1A, and a relay is needed to limit the current from the chartplotter to1A.
• To manually toggle visual and audible alerts, you can install single-pole, single-throw switches.
Item Description
Power source
Power cable
Horn
Lamp
Relay (1A coil current)
Toggle switches to enable and disable lamp or horn alerts
Item Wire Color Wire Function
Red Power
Black Ground
Yellow Alarm
12
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