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5GSD 21 Sonar Module
INSTALLATION INSTRUCTIONS
WIRE
COLOR
GARMIN GSD 21
SOUNDER MODULE
BLACK
ORANGE
RED
WHITE/BLUE
BLACK
RED
WHITE/BLUE
WHITE/BROWN
WHITE/BROWN
WIRE
COLOR
3 A
FUSE
ORANGE
2 A
FUSE
TO
TRANSDUCER
BATTERY
10-33 VOLTS DC
Serial Wiring for the Garmin GSD 21 to a Single
GPSMAP 2006/2006C/2010/2010C/2106/2110/2206/2210/3006C/3010C/3206/3210
Notes:
1. You can extend the serial/power wiring of the GSD 21 power/data cable up to 100 ft (30 m) total length. Use the CANet Extension Cable or
22 AWG, 4-conductor shielded cable for data connections and 18 AWG for power.
2. Ground the drain wire at the display unit. Do not ground the drain wire on the sonar unit.
3. Refer to the chartplotter’s specific Installation Instructions for wiring the GPS 17 sensor and other devices.
4. When crimping the 3-wire connector, use a standard pair of pliers and make sure the button is fully depressed into the connector.