©2011 Icom America Inc
Page 1
Icom America, Inc.
12421 Willows Rd NE
Kirkland, WA 98034
Connecting a GPS to Your Icom M504/M504A radio
The back panel of your M504/A radio has 2 wires that you can use to connect to your
GPS.
M504 Connections
Radio
GPS
NMEA in + (red wire)
→
NMEA / Data out
NMEA in
(red wire shield)
→
NMEA / Data ground
NMEA out + (white wire)
→
NMEA / Data in
NMEA out
(white wire shield)
→
NMEA / Data ground
GPS Example Connections
You will need to solder the 2 wires and their shields to the NMEA wires from your
GPS. For more specific information, consult the individual instruction manual from
the GPS manufacturer.
Garmin GPS
