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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.

  1. Using 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

    3.5 mm (9/64 in.)

    GPSMAP 16x3

    6 mm (1/4 in.)

  2. Starting in one corner of the template, place a nut plate Callout number 1 over the larger hole Callout number 2 drilled in the previous step.

    Nutplate with callouts

    The other hole Callout number 3 on the nut plate should line up with the smaller hole on the template.

  3. If the smaller hole on the nut plate does not line up with the smaller hole on the template, mark the new hole location.
  4. Repeat to verify placement of the remaining nut plates and holes on the template.
  5. Using 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

    3 mm (1/8 in.)

    GPSMAP 16x3

    3.5 mm (9/64 in.)

  6. Remove the template from the mounting surface.
  7. Starting in one corner of the mounting location, place a nut plate Callout number 4 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.


    Device flush-mount installation with callouts
  8. Secure the nut plates to the mounting surface by fastening the pan head machine screws Callout number 5 through the holes with the raised portion of the nut plate.
  9. Install the foam gasket Callout number 6 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 Callout number 7.
  15. Wipe away all excess marine sealant.
  16. Install the trim caps by snapping them in place around the edges of the device.
GUID-BF2FF273-008A-482A-A96F-362ADA8996BA v6
February 2024
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