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3GSD 20 Sonar Module
INSTALLATION INSTRUCTIONS
WIRE
COLOR
GARMIN GSD 20
SOUNDER MODULE
BLACK
ORANGE
RED
WHITE/BLUE
BLACK
RED
WHITE/BLUE
WHITE/BROWN
WHITE/BROWN
WIRE
COLOR
5 A
FUSE
ORANGE
2 A
FUSE
TO
TRANSDUCER
BATTERY
10-35 VOLTS DC
BASIC WIRING FOR THE GARMIN GSD 20 TO A SINGLE
GPSMAP 2006/2006C/2010/2010C/3005C/3006C/3010C
Notes:
1. Power and ground wires require 18 AWG. All other wires require 22 AWG. Use 4-conductor, shielded wiring for runs over 30’ (9.1 m).
2. Refer to the GPSMAP 2006/2006C/2010/2010C/3005C/3006C/3010C Installation Instructions for wiring the GPS 17 sensor and other devices.
3. For runs over 30’ (9.1 m), the drain wire must be connected to the shielding of the extension run. Do not terminate the end of the shield drain wire.
4. When multiple GPSMAP 3005C/3006C/3010C units are in use, only wire the GSD 20 to one unit. The GSD 20 information is transmitted to all
units connected to the Garmin Marnine Network.