Garmin GPSMAP 1223 Installation manual
GPSMAP® 7X3/9X3/12X3
INSTALLATION
INSTRUCTIONS
Important Safety Information
WARNING
Failure to follow these warnings, cautions, and notices could
result in personal injury, damage to the vessel or device, or poor
product performance.
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. In
addition, 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.
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.
Mounting style Drill bit sizes
Bail with included wood screws 3 mm (1/8 in.)
Flush for the corner of the cutout GPSMAP 7x3: 6.5 mm (1/4 in.)
GPSMAP 9x3: 7.4 mm
(5/16 in.)
GPSMAP 12x3: 13.5 mm
(9/16 in.)
Flush with included wood screws 3.5 mm (9/64 in.)
Flush with included machine
screws and nut plates
Flush with included machine
screws and tapped holes
• #2 Phillips screwdriver
• Jigsaw or rotary tool
• File and sandpaper
• Marine sealant (recommended)
3.5 mm (9/64 in.)
3 mm (1/8 in.)
M3 tap
GPSMAP 7x3 and GPSMAP 9x3 Connector View
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, 32 GB max.
GPSMAP 12x3 Connector View
NOTICE
For the best possible performance, the device must be installed
according to these instructions.
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.
Tools Needed
• Drill
• Drill bits appropriate for the device and mounting style
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
GUID-BF2FF273-008A-482A-A96F-362ADA8996BA v1October 2020
Ground screw
NETWORK Garmin Marine Network
NMEA 2000 NMEA 2000 network
J1939 Engine or J1939 network
2 microSD memory card slots, 32 GB max.
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.
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.
• 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.
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.
Using the bail-mount bracket as a template, mark the pilot
1
holes .
Using a 3 mm (1/8 in.) drill bit, drill the pilot holes.
2
Secure the bail-mount bracket to the surface using the
3
included washers and wood screws .
Install the bail-mount knobs on the sides of the device.
4
Place the device in the bail-mount bracket, and tighten the
5
bail-mount knobs.
Install the trim caps by snapping them in place around the
6
edges of the device.
Flush Mounting the Device
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 powder coating, 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 drill holes and use the included nut plates and
machine screws. The nut plates can add stability to a thinner
surface.
• You can punch and tap holes, and use the included machine
screws.
Trim the template, and make sure it fits in the location where
1
you want to mount the device.
Secure the template to the mounting location.
2
Using a drill bit according to the list below, drill one or more of
3
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 6.5 mm (1/4 in.)
GPSMAP 9x3 7.4 mm (5/16 in.)
GPSMAP 12x3 13.5 mm (9/16 in.)
2
Using a jigsaw or a rotary tool, cut the mounting surface
4
along the inside line on the template.
Place the device in the cutout to test the fit.
5
If necessary, use a file and sandpaper to refine the size of
6
the cutout.
If necessary, remove the trim caps.
7
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.
After the device fits correctly in the cutout, ensure the
8
mounting holes on the device line up with the hole locations
on the template.
NOTE: GPSMAP 12x3 models have six mounting holes.
GPSMAP 9x3 and GPSMAP 7x3 models have four mounting
holes.
If the mounting holes on the device do not line up, mark the
9
new hole locations.
Based on your mounting method, drill or punch and tap the
10
outer holes on the template:
• For the included wood screws, drill 3.5 mm (9/64 in.) holes,
and skip to step 18.
• For the included nut plate and machine screws, drill
3.5 mm (9/64 in.) holes in the outer hole locations.
• For the included machine screws without the nut plate,
punch and tap M3 holes, and skip to step 18.
If you are using a nut plate, starting in one corner of the
11
template, place a nut plate over the hole drilled in the
previous step.
The other hole on the nut plate should line up with the
inner hole on the template.
If the inner hole on the nut plate does not line up with the
12
inner hole on the template, mark the new hole location.
If you are using a nut plate, using a 3 mm (1/8 in.) drill bit, drill
13
a hole in the inner hole location.
Repeat to verify placement of the remaining nut plates and
14
holes on the template.
Remove the template from the mounting surface.
15
Starting in one corner of the mounting location, place a nut
16
plate on the back of the mounting surface, lining up the
holes.
The raised portion of the nut plate should fit into the inner
hole.
Secure the nut plates to the mounting surface by fastening
17
the pan head machine screws through the inner holes.
Install the foam gasket on the back of the device.
18
The pieces of the foam gasket have adhesive on the back.
Make sure you remove the protective liner before installing
them on the device.
If you will not have access to the back of the device after you
19
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.
Apply marine sealant between the mounting surface and the
20
device to properly seal and prevent leakage behind the
dashboard.
If you will have access to the back of the device, apply
21
marine sealant around the cutout.
Place the device into the cutout.
22
Secure the device to the mounting surface using the flat head
23
machine screws or the included wood screws.
Wipe away all excess marine sealant.
24
Install the trim caps by snapping them in place around the
25
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 NMEA 0183 or alarm wires,
you must use 22 AWG (.33 mm²) wire.
• This cable provides one differential NMEA 0183 input and
output port.
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. In
3
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