Appendix B: Wiring & Interfacing; Wiring And Interfacing - Garmin GPS 72 Owner's Manual

Connecting the Power/Data
The power/data cable connects the GPS 72 to a 8-35 volt DC system and provides
interface capabilities for connecting external devices. The color code in the diagram below
indicates the appropriate harness connections. Replacement fuse is a AGC/3AG - 2.0 Amp
fuse.
Interfacing
The following formats are supported for connection of external devices:
GARMIN proprietary Differential GPS (DGPS), NMEA 0183 version 2.3, ASCII Text Output,
RTCM SC-104 input (version 2.0).
The following are the sentences for NMEA 0183, version 2.3 output:
Approved sentences — GPRMC, GPGGA, GPGSA, GPGSV, GPGLL, GPBOD, GPRTE, and
GPWPL; Proprietary sentences — PGRME, PGRMZ, and PSLIB. The GPS 72 also includes
NMEA input with support for the DPT, MTW, and VHW sentences.
You can download a copy of GARMIN' s proprietary communication protocol on the Help and
Support section of our Web Site at www.garmin.com.
Red: Power
Black: Ground
8-35
Brown: Data Out
White: Data In
3
Introduction Appendix B

Wiring and Interfacing

Unit View
Data In
White
Power
Red
Cable View
Data In
White
Ground
Black
Ground
Black
Data Out
Brown
Power
Red
Data Out
Brown
49 49