Installation Guide
Page 9
..., shielded wiring for wiring the GPS 17 sensor and other wires require 22 AWG. For runs over 30' (9.1 m), the drain wire must be connected to the GPSMAP 172/172C Owner's Manual for runs over 30' (9.1 m). 2. INSTALLATION INSTRUCTIONS 7 Do not terminate the end of the extension run. GSD 20 Sonar Module BASIC WIRING FOR THE GARMIN GSD 20 TO A SINGLE GPSMAP 172...
..., shielded wiring for wiring the GPS 17 sensor and other wires require 22 AWG. For runs over 30' (9.1 m), the drain wire must be connected to the GPSMAP 172/172C Owner's Manual for runs over 30' (9.1 m). 2. INSTALLATION INSTRUCTIONS 7 Do not terminate the end of the extension run. GSD 20 Sonar Module BASIC WIRING FOR THE GARMIN GSD 20 TO A SINGLE GPSMAP 172...