GPSMAP
®
8500 GRID™ Installation
Instructions
The GRID device allows you to control a compatible Garmin
®
device connected to the same Garmin Marine Network using a
joystick and buttons in addition to the touch screen, if
applicable. The GRID device is not compatible with Garmin
chartplotters prior to the GPSMAP
®
8000 Series and GPSMAP
8500.
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. In
addition, connecting the power cable without the appropriate
fuse in place will void the product warranty.
CAUTION
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.
Registering Your Device
Help us better support you by completing our online registration
today.
• Go to
• Keep the original sales receipt, or a photocopy, in a safe
place.
Contacting Garmin Product Support
• Go to
and click
Contact Support
for in-country support information.
• In the USA, call (913) 397.8200 or (800) 800.1020.
• In the UK, call 0808 2380000.
• In Europe, call +44 (0) 870.8501241.
Tools Needed
• Drill and drill bits
• #2 Phillips screwdriver
• Marine sealant
• Jigsaw
• File and sandpaper
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.
This device can be mounted in dashboard or other surface
using the included hardware. When selecting a mounting
location, observe these considerations.
• The device should be mounted in an accessible location.
You must be able to readily access the joystick and buttons
to interact with the assigned navigation device.
• 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 the cables.
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.
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 any cracking in the gel-coat layer when the screws are
tightened.
The included template and hardware can be used to mount the
device at the selected location.
1
Trim the flush-mount template and make sure it fits in the
location where you want to mount the device.
2
Remove the protective liner from the back of the template
and adhere it to the location where you want to mount the
device.
3
Using a
7
/
16
in. (11 mm) drill bit, drill one or more of the holes
inside the corners of the solid line on the template to prepare
the mounting surface for cutting.
4
Using a jigsaw, cut the mounting surface along the inside of
the solid line indicated on the template.
5
Place the device in the cutout to test the fit.
6
If necessary, use a file and sandpaper to refine the size of
the cutout.
7
After the device
À
fits correctly in the cutout, make sure the
mounting holes on the device line up with the pilot holes
Á
on the template.
8
If the mounting holes on the device do not line up, mark the
new pilot-hole locations.
9
Using either a
3
/
32
in. (2.5 mm) drill bit, or drill bit appropriate
for the mounting surface, drill the pilot holes.
10
Remove the template from the mounting surface.
11
If you will not have access to the back of the device after you
mount it, connect all necessary cables to the device before
placing it into the cutout.
12
Place the device into the cutout.
2
