Garmin GMI 10 Digital Marine Instrument Display Installation Instructions, S/N - Page 3
Step 3: Connect the GMI 10 to Power, CAUTION
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Installation Instructions 7. Using a drill bit as specified by the Pilot Hole Size Table, drill the four mounting holes. Material Material Thickness (in.) Material Thickness (mm) Aluminum alloy sheet metal from 1/32 to 5/64 from 3/32 to 3/8 from 0.76 to 2.03 from 2.28 to 9.52 Fiberglass-all thicknesses High Density Plastic-all thicknesses Plywood (resin impregnated)-Professional installation recommended Hole Size (in.) .128 .147 .140 .125 .144 Hole Size (mm) 3.25 3.73 3.56 3.17 3.66 Hole Size (Drill Number) 30 26 28 1/8 27 Pilot Hole Size Table Note: If you are mounting the chartplotter in fiberglass, it is recommended to use a countersink bit to drill a clearancecounterbore through only the top gel-coat layer. This will help to avoid any cracking in the gel-coat layer when the screws are tightened 8. Place the GMI 10 into the cutout 9. Securely tighten the four mounting screws through the GMI 10 into the drilled mounting holes. Note: Stainless-steel screws may bind when screwed into fiberglass and overtightened. Garmin recommends applying an anti-galling, stainless anti-seize lubricant to the screw before using. 10.Install the mounting covers by snapping them into place. Step 3: Connect the GMI 10 to Power The GMI 10 comes with a cable assembly that connects it to power and provides interface capabilities for connecting external devices with NMEA 0183 (page 6). The replacement fuse is an AGC/3AG - 1 A fuse. If it is necessary to extend the power wires, use 18 AWG wire. If your boat has an electrical system, you might be able to wire the GMI 10 directly to an unused holder on your current fuse block. If you are using the fuse block, remove the in-line fuse holder supplied with the GMI 10. You can also wire the GMI 10 directly to the battery. 1 A fuse Boat ground 1A + - To 8-32 Vdc boat supply - + To GMI 10 Fuse Block Caution: The GMI 10 maximum input voltage is 32 Vdc. Do not exceed this voltage, because this can damage the GMI 10 and void the warranty. Note: During a typical installation, use only the red and black wires. The other wires are used for NMEA 0183 connections, and do not have to be connected for normal operation of the GMI 10. For information on connecting to a NMEA 0183compatible device, see page 6. GMI 10 Installation Instructions