Installation Guide
Page 9
...GPS 17 sensor and other wires require 22 AWG. Refer to the GPSMAP 172/172C Owner's Manual for runs over 30' (9.1 m), the drain wire must be connected to the shielding of the shield drain wire. Do not terminate the end of the extension run. All other devices. 3. GSD 20 Sonar Module BASIC WIRING FOR THE GARMIN GSD 20... TO A SINGLE GPSMAP 172/172C FUSE 5A WIRE COLOR RED BLACK BLUE BROWN ORANGE WIRE COLOR RED FUSE 2A BLACK WHITE/BLUE WHITE/BROWN ORANGE GARMIN GSD 20 SOUNDER MODULE TO TRANSDUCER BATTERY...
...GPS 17 sensor and other wires require 22 AWG. Refer to the GPSMAP 172/172C Owner's Manual for runs over 30' (9.1 m), the drain wire must be connected to the shielding of the shield drain wire. Do not terminate the end of the extension run. All other devices. 3. GSD 20 Sonar Module BASIC WIRING FOR THE GARMIN GSD 20... TO A SINGLE GPSMAP 172/172C FUSE 5A WIRE COLOR RED BLACK BLUE BROWN ORANGE WIRE COLOR RED FUSE 2A BLACK WHITE/BLUE WHITE/BROWN ORANGE GARMIN GSD 20 SOUNDER MODULE TO TRANSDUCER BATTERY...