GXM
™
54
INSTALLATION INSTRUCTIONS
Important Safety Information
WARNING
The weather information provided through this product is subject to service interruptions and may contain
errors, inaccuracies, or outdated information, and consequently should not be relied upon exclusively. Always
use common sense while navigating, and check alternate weather information sources prior to making safety-
related decisions. You acknowledge and agree that you shall be solely responsible for use of the weather
information and all decisions taken with respect to navigating in weather. Garmin
®
will not be responsible for
any consequences of using SiriusXM
®
weather information.
When connecting the power cable, do not remove the in-line fuse holder. To prevent the possibility of injury or
product damage caused by fire or overheating, the appropriate fuse must be in place as indicated in the product
specifications. Connecting the power cable without the appropriate fuse in place voids the product warranty.
CAUTION
To avoid possible personal injury, always wear safety goggles, ear protection, and a dust mask when drilling,
cutting, or sanding.
NOTICE
When drilling or cutting, always check what is on the opposite side of the surface to avoid damaging the vessel.
Software Update
You must update the Garmin chartplotter software when you install this device. For instructions on updating the
software, see your chartplotter owner's manual at support.garmin.com.
Tools Needed
• Drill
• 3.2 mm (
1
/
8
in.) drill bit for pilot holes for surface mounting
• 25 mm (1 in.) hole saw or drill bit for surface-mount cable hole
• 19 mm (
3
/
4
in.) drill bit for pole-mount cable hole
• Countersink bit for surface mounting on fiberglass
• 1.5 mm hex wrench for included M3 screws
• Phillips screwdriver for included M4 screws
• M4 screws of appropriate length, if included M4 screws are too short
• Marine sealant (optional)
• Additional Garmin Marine Network components as needed
GUID-D57F5CDC-08A4-43F8-90A0-2A457D4A398E v4October 2022
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