Garmin GPSMAP 16X3 User manual
GPSMAP®7X3/9X3/12X3/16X3
INSTALLATION INSTRUCTIONS
Important Safety Information
WARNING
See the Important Safety and Product Information guide in the product box for product warnings and other
important 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.
Failure to install this device according to these instructions could result in personal injury, damage to the vessel
or device, or poor product performance.
CAUTION
To avoid possible personal injury, always wear safety goggles, ear protection, and a dust mask when drilling,
cutting, or sanding.
To avoid possible personal injury or damage to the device and vessel, disconnect the vessel's power supply
before beginning to install the device.
To avoid possible personal injury or damage to the device or vessel, before applying power to the device, make
sure that it has been properly grounded, following the instructions in the guide.
To avoid possible personal injury or damage to this device and vessel, only install this device when the vessel is
on land, or when properly secured and docked in calm water conditions.
NOTICE
When drilling or cutting, always check what is on the opposite side of the surface to avoid damaging the vessel.
Read all installation instructions before proceeding with the installation. If you experience difficulty during the
installation, contact Garmin® Product Support.
TA-2020/7368
TA-2020/7391
TA-2020/7392
TA-2021/2041
GUID-BF2FF273-008A-482A-A96F-362ADA8996BA v6February 2024
Tools Needed
• Drill
• Drill bits appropriate for the device and mounting style
Mounting style Drill bit sizes
Bail with included wood screws 3mm (1/8in.)
Flush for the corner of the cutout
GPSMAP 7x3: 6.5mm (1/4in.)
GPSMAP 9x3: 8mm (5/16in.)
GPSMAP 12x3 and GPSMAP 16x3: 14mm (9/16in.)
Flush with included wood screws GPSMAP 7x3, GPSMAP 9x3, and GPSMAP 12x3: 2.3mm (3/32in.)
GPSMAP 16x3: 3.2mm (1/8in.)
Flush with included machine screws and
nut plates
All models: 3.5mm (9/64in.)
GPSMAP 7x3, GPSMAP 9x3, and GPSMAP 12x33mm (1/8in.)
GPSMAP 16x3: 6mm (1/4in.)
Flush with included machine screws and
tapped holes
GPSMAP 7x3, GPSMAP 9x3, and GPSMAP 12x3: M3 tap
GPSMAP 16x3: M4 tap
• #2 Phillips screwdriver
• Jigsaw or rotary tool
• File and sandpaper
• Marine sealant (recommended)
GPSMAP 7x3 and GPSMAP 9x3 Connector View
2
POWER Power and NMEA® 0183 network
NETWORK Garmin Marine Network
J1939 J1939 engine network
Ground screw
CVBS IN Composite video in
SONAR 12-pin transducer (Not available on all models)
USB Micro-USB for compatible Garmin card reader
NMEA 2000 NMEA 2000® network
2 microSD® memory card slots, 32GB max.
GPSMAP 12x3 and GPSMAP 16x3 Connector View
POWER Power and NMEA 0183 network
SONAR 12-pin transducer (Not available on all models)
HDMI HDMI® video out
CVBS IN Composite video in
USB Micro-USB for compatible Garmin card reader
Ground screw
NETWORK Garmin Marine Network
NMEA 2000 NMEA 2000 network
J1939 Engine or J1939 network
2 microSD memory card slots, 32GB max.
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Contacting Garmin Support
• Go to support.garmin.com for help and information, such as product manuals, frequently asked questions,
videos, and customer support.
• In the USA, call 913-397-8200 or 1-800-800-1020.
• In the UK, call 0808 238 0000.
• In Europe, call +44 (0) 870 850 1241.
Software Update
You may need to update the chartplotter software after installation. For the instructions on how to update the
software, see the owner's manual at garmin.com/manuals/gpsmap7x3-9x3-12x3-16x3/.
Mounting Considerations
NOTICE
This device should be mounted in a location that is not exposed to extreme temperatures or conditions. The
temperature range for this device is listed in the product specifications. Extended exposure to temperatures
exceeding the specified temperature range, in storage or operating conditions, may cause device failure.
Extreme-temperature-induced damage and related consequences are not covered by the warranty.
When selecting a mounting location, you should observe these considerations.
• The location should provide optimal viewing as you operate your boat.
• The location should allow for easy access to all device interfaces, such as the keypad, touchscreen, and card
reader, if applicable.
• The location must be strong enough to support the weight of the device and protect it from excessive
vibration or shock.
• To avoid interference with a magnetic compass, the device should not be installed closer to a compass than
the compass-safe distance value listed in the product specifications.
• The location must allow room for the routing and connection of all cables.
• When flush mounting the device, the location must not be a flat, horizontal surface. The location should be in
a vertical angle.
The location and viewing angle should be tested before you install the device. High viewing angles from
above and below the display may result in a poor image.
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Bail Mounting the Device
NOTICE
If you are mounting the bracket on fiberglass with screws, it is recommended to use a countersink bit to drill a
clearance counterbore through only the top gel-coat layer. This will help to avoid cracking in the gel-coat layer
when the screws are tightened.
You can use the bracket to bail mount the device on a flat surface.
1Using the bail-mount bracket as a template, mark the pilot holes .
2Using a 3mm (1/8in.) drill bit, drill the pilot holes.
3Secure the bail-mount bracket to the surface using the included washers and wood screws .
4Install the bail-mount knobs on the sides of the device.
5Place the device in the bail-mount bracket, and tighten the bail-mount knobs.
6Install the trim caps by snapping them in place around the edges of the device.
Flush Mounting
NOTICE
Be careful when cutting the hole to flush mount the device. There is only a small amount of clearance between
the case and the mounting holes, and cutting the hole too large could compromise the stability of the device
after it is mounted.
Use only the included hardware when mounting this device. Using mounting hardware not provided with the
device may damage the device.
To avoid potential damage to the device housing, use only the included screws to mount the device. Using
screws other than the ones included will void your warranty.
Do not use the device as a template when drilling the mounting holes because this may damage the glass
display and void the warranty. You must only use the included template to correctly drill the mounting holes.
If you will not have access to the back of the device and the microSD memory card slots after installations, you
should install the microSD memory card prior to installation.
The included template and hardware can be used to flush mount the device in your dashboard. There are three
options for hardware based on the mounting surface material.
• You can drill pilot holes and use the included wood screws.
• You can punch and tap holes, and use the included machine screws.
• You can drill holes and use the included nut plates and machine screws. The nut plates can add stability to a
thinner mounting surface.
5
Preparing the Mounting Surface for Flush Mounting
1Trim the template, and make sure it fits in the location where you want to mount the device.
2Secure the template to the mounting location.
3Using a drill bit according to the table below, drill one or more of the holes inside the corners of the solid line
on the template to prepare the mounting surface for cutting.
Device Drill bit size
GPSMAP 7x3 6.5mm (1/4in.)
GPSMAP 9x3 8mm (5/16in.)
GPSMAP 12x3 and GPSMAP 16x3 14mm (9/16in.)
4Using a jigsaw or a rotary tool, cut the mounting surface along the inside line on the template.
5Place the device in the cutout to test the fit.
6If necessary, use a file and sandpaper to refine the size of the cutout.
7If necessary, remove the trim caps.
NOTICE
Use a plastic pry tool when possible. Using a metal pry tool, such as a screwdriver, can damage the trim caps
and the device.
8After the device fits correctly in the cutout, ensure the mounting holes on the device line up with the hole
locations on the template.
NOTE: GPSMAP 12x3 and GPSMAP 16x3 models have six mounting holes. GPSMAP 9x3 and GPSMAP 7x3
models have four mounting holes.
9If the mounting holes on the device do not line up, mark the new hole locations.
After you have prepared the mounting surface, proceed to the topic for mounting the device using nut plates
or mounting the device using wood or metal screws, depending on how you plan to secure the device to the
mounting surface.
6
Flush Mounting the Device Using Wood or Metal Screws
Before you can secure the device to the mounting surface using wood or metal screws, you must cut an
opening for the device and confirm or mark the locations of the mounting holes.
1Using a drill bit according to the table below, drill or drill and tap the larger holes indicated on the template.
Device Drill bit size
GPSMAP 7x3, GPSMAP 9x3, and GPSMAP 12x3 Wood screws (drill): 2.3mm (3/32in.)
Metal screws (drill and tap): M3
GPSMAP 16x3 Wood screws (drill): 3.2mm (1/8in.)
Metal screws (drill and tap): M4
2Install the foam gasket on the back of the device.
The pieces of the foam gasket have adhesive on the back. Make sure you remove the protective liner before
installing them on the device.
3If you will not have access to the back of the device after you mount it, connect all necessary cables and
install microSD cards in the back of the device before placing it into the cutout.
NOTICE
To prevent corrosion of the metal contacts, cover unused connectors with the attached weather caps.
4Apply marine sealant between the mounting surface and the device to properly seal and prevent leakage
behind the dashboard.
5If you will have access to the back of the device, apply marine sealant around the cutout.
6Place the device into the cutout.
7Secure the device to the mounting surface using the included flat head machine screws or the included
wood screws.
8Wipe away all excess marine sealant.
9Install the trim caps by snapping them in place around the edges of the device.
7
Flush Mounting the Device Using Nut Plates
Before you can secure the device to the mounting surface using nut plates, you must cut an opening for the
device and confirm or mark the locations of the mounting holes.
1Using a drill bit according to the table below, drill the larger holes for the nut plate as indicated on the
template.
Device Drill bit size
GPSMAP 7x3, GPSMAP 9x3, and GPSMAP 12x3 3.5mm (9/64in.)
GPSMAP 16x3 6mm (1/4in.)
2Starting in one corner of the template, place a nut plate over the larger hole drilled in the previous step.
The other hole on the nut plate should line up with the smaller hole on the template.
3If the smaller hole on the nut plate does not line up with the smaller hole on the template, mark the new hole
location.
4Repeat to verify placement of the remaining nut plates and holes on the template.
5Using a drill bit according to the table below, drill the smaller holes for the nut plate.
Device Drill bit size
GPSMAP 7x3, GPSMAP 9x3, and GPSMAP 12x3 3mm (1/8in.)
GPSMAP 16x3 3.5mm (9/64in.)
6Remove the template from the mounting surface.
7Starting in one corner of the mounting location, place a nut plate on the back of the mounting surface,
lining up the holes.
On GPSMAP 7x3, GPSMAP 9x3, and GPSMAP 12x3 devices, the raised portion of the nut plate should fit into
the smaller hole.
On GPSMAP 16x3 devices, the raised portion of the nut plate should fit into the larger hole.
8Secure the nut plates to the mounting surface by fastening the pan head machine screws through the
holes with the raised portion of the nut plate.
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9Install the foam gasket on the back of the device.
The pieces of the foam gasket have adhesive on the back. Make sure you remove the protective liner before
installing them on the device.
10 If you will not have access to the back of the device after you mount it, connect all necessary cables and
install microSD cards in the back of the device before placing it into the cutout.
NOTICE
To prevent corrosion of the metal contacts, cover unused connectors with the attached weather caps.
11 Apply marine sealant between the mounting surface and the device to properly seal and prevent leakage
behind the dashboard.
12 If you will have access to the back of the device, apply marine sealant around the cutout.
13 Place the device into the cutout.
14 Secure the device to the other holes on the nut plates using the included flat head machine screws .
15 Wipe away all excess marine sealant.
16 Install the trim caps by snapping them in place around the edges of the device.
Connection Considerations
After connecting the cables to the device, tighten the locking rings to secure each cable.
Power/NMEA 0183 Cable
• The wiring harness connects the device to power, NMEA 0183 devices, and a lamp or a horn for visible or
audible alerts.
• If it is necessary to extend the power and ground wires, you must use a wire gauge appropriate for the length
of the extension (Power Wire Extensions, page11).
• If it is necessary to extend the NMEA 0183 or alarm wires, you must use 22AWG (.33mm²) wire.
• This cable provides one differential NMEA 0183 input and output port.
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Item Wire Color Wire Function
Red Power
Black Ground (power and NMEA 0183)
Blue NMEA 0183 TxA (Out +)
Gray NMEA 0183 TxB (Out -)
Brown NMEA 0183 RxA (In +)
Violet NMEA 0183 RxB (In -)
Orange Accessory on
Yellow Alarm low
Connecting the Wiring Harness to Power
WARNING
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.
1Route the wiring harness to the power source and to the device.
2Connect the red wire to the positive (+) battery terminal, and connect the black wire to the negative (-) battery
terminal.
3If necessary, install the locking ring and O-ring on the end of the wiring harness.
4Insert the cable into the POWER connector on the back of the device, pushing firmly.
5Turn the locking ring clockwise to attach the cable to the device.
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This manual suits for next models
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