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Garmin Boat Switch Navigation and Anchor Light Wiring
The first three channels of the Garmin Boat switch can be used for navigation lighting. By default channels 1 and 2 are interlocked to satisfy the international regulations for preventing collisions at sea. Depending on the navigation lighting on the vessel, there are three different options for activating these lights.
OPTION A (default)
One connection for red / green navigation lights, and one connection for white navigation / anchor lights. Channels 1 and 2 are interlocked and intended for one connection to red / green navigation lights and one connection to white navigation / anchor lights.
- When underway, selecting the switch for channel 1 turns on and off both channels 1 and 2 (both red / green navigation lights and white navigation / anchor lights)
- When at anchor, selecting the switch for channel 2 turns on and off channel 2 only (white navigation / anchor lights), and turns off channel 1 (red / green navigation lights) if it is already on
OPTION B
The device is configured so channels 1 and 2 are interlocked and intended for one connection to red/green/white navigation lights and one connection to an anchor light.
- When underway, selecting the switch for channel 1 turns on and off only channel 1 (red / green / white navigation lights) and turns off channel 2 (anchor light) if it is already on.
- When at anchor, selecting the switch for channel 2 turns on and off only channel 2 (anchor light), and turns off channel 1 (red / green / white navigation lights) if it is already on.
OPTION C
The device can be configured so channels 1, 2, and 3 are interlocked and intended for one connection to red / green / white navigation lights, one connection to a streaming light, and one connection to an anchor light.
- When underway, under sail, selecting the switch for channel 1 turns on and off channel 1 (red / green / white navigation lights), and turns off channel 2 (steaming light) and channel three (anchor light) if either are already on
- When underway, under engine, selecting the switch for channel 2 turns on and off channel 1 (red / green / white navigation lights), and channel 2 (steaming light), and turns off channel 3 (anchor light) if it is already on
- When at anchor, selecting the switch for channel 3 turns on and off only channel 3 (anchor light), and turns off channel 1 (red / green / white navigation lights) and channel 2 (steaming light) if either are already on
Configuring The Navigation Light Option
Follow these steps to choose the proper option for the installation configuration. If channels 1, 2 and 3 will not be used for navigation and anchor lights, they can be configured to operate independently as normal latching switches.
- From the Garmin chartplotter connected to the same NMEA 2000 network as the Garmin Boat Switch device, select Vessel > Switching
- Hold switch 1 for 5 seconds until it starts flashing
- Hold switch 2 for 5 seconds until it stops flashing and a message confirms the newly selected wiring option
- Repeat the previous two steps until the device is configured for the wiring option that applies to the installation type
NOTE: After selecting option C, the next configuration option in the cycle deactivates the interlocks so that channels 1, 2, and 3 operate independently as normal latching switches.