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4 GSD 22 Sonar Module
INSTALLATION INSTRUCTIONS
Marine Network Wiring and Cables
Garmin Marine Network components use specialized Garmin Network cables. For some installations, it may be necessary to drill 1.25" (31.7
mm) holes to route the connector end of the cables. Garmin rubber grommets are provided to cover the installation holes (see below). Wiring
instructions are found on the following pages. If you experience difficulty installing the unit, contact Garmin Product Support or seek the
assistance of a professional installer.
The grommets may not be needed in some installations. The grommets do NOT create a waterproof seal. Apply a marine sealant after
installation to weatherproof around the grommet and cable. Additional grommets can be purchased from your Garmin dealer or direct from
Garmin. Be sure to test the system before installing the grommets.
Tools
• Drill
• 1.25" (31.7 mm) paddle drill bit or hole saw
• Utility knife
• Marine sealant (optional)
To install the Cable Grommet:
1. Mark the location where the cable Power/Data or Garmin Marine Network cable is to route through.
2. Using a 1.25" (31.7 mm) paddle drill bit or hole saw, drill the installation hole.
3. Refer to the diagram below for trimming instructions. Carefully trim the cable hole, as needed.
4. Route the cable to the unit.
5. Spread the grommet apart at the split, and place it around the cable (see below).
6. Firmly push the grommet into the installation hole until it is seated. Apply marine sealant, as needed, to weatherproof the cable.
Split
Use this hole (no trim) for the Power/Data,
Garmin Marine Network, or GPS 17 Cable