Garmin GPSMAP 496 Owner's Manual (for North America) - Page 166
Installation Information, Connecting the Power/Data Cable
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Appendix > Installation Information Installation Information Connecting the Power/Data Cable The power/data cable connects the GPSMAP 496 to an 11-35 VDC system and provides interface capabilities for connecting external devices. The color code in the diagram below and to the right indicates the appropriate harness connections. Replacement fuse is a 3AG - 1.5 Amp fuse. Ground Black Alarm White Voice (+) Brown Voice (-) Orange Data Out Blue Power Red Data In Yellow Power/Data Connector on the GPSMAP 496 Unit Note: The Alarm pin is used in Marine installations only. Note: The Voice (+) and Voice (-) pins are intended for a speaker in automotive installations. Do not connect the Voice (+) and Voice (-) pins to an intercom or audio panel without first consulting the manufacturer. 158 Data Out Blue Power Red Voice (-) Orange Ground Black Alarm White Voice (+) Brown Data In Yellow Power/Data Connector on the Cable Red: Power Black: Ground (-) (+) 11-35 VDC Blue: Data Out Yellow: Data In RXD + Autopilot/ NMEA Device RXD - Switch White/Blue (+) Orange GSD 20 Closed - On, Open - Off Sounder (-) White/Brown GPSMAP 496 Owner's Manual