Garmin 500 Marine GPS System User Manual


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GPSMAP 400/500 Series Installation Instructions 7
Connecting the Wiring Harness to a NMEA 0183 Device
You can connect the GPSMAP device to other NMEA compatible equipment, such as a DSC or AIS device. Refer to the wiring diagram for
connecting the chartplotter to NMEA 0183-compatible devices.
Wiring a GPSMAP 400/500 Series Chartplotter to a Standard NMEA 0183 Device
+
-
>
>
>
>
Red (power)
Black (ground)
Brown (in)
Blue (out)
Wire color
Power
Power ground
NMEA Ground
NMEA Rx/A (+)
NMEA Tx/A (+)
NMEA 0183
compliant device
GPSMAP
400/500
Series
Chartplotter
Battery
10–32 Vdc*
Fuse
3 A
Wire function
To connect the wiring harness to a NMEA 0183 device:
1. ForGarmindevices,theground(black)wiresserveasNMEA0183groundandmustbeattachedtogetheroronthesameterminalasthe
NMEA0183groundonyourNMEA0183device.RefertothewiringdiagramofyourNMEA0183deviceforwireidentication.
2. Connecttheblue(NMEA0183port1out)wirefromtheGPSMAP400/500wiringharnesstotheNMEA0183in(orRx/A+)wireonthe
wiringharnessoftheNMEA0183device,andthebrown(NMEA0183port1in)wiretotheNMEAout(orTx/A+)wireonthewiringharness
oftheNMEA0183device.
3. Repeatstep2usingthegreyandvioletwiresforanadditionalNMEA0183device.
4. Settheserialport(s)onthechartplottertouseNMEA0183data(standardorhighspeed).SeetheGPSMAP 400/500 Series Owner’s
Manualformoreinformation.
Connecting the Wiring Harness to an Optional Horn, Lamp, or Both
The GPSMAP 400/500 series chartplotter can be used with a lamp, a horn, or both, to sound or ash an alert when the chartplotter displays a
message. The alarm does not need to be wired for the GPSMAP 400/500 chartplotter to function. The alarm circuit switches to a low-voltage
state when the alarm sounds. The maximum current is 100 mA, and a relay is needed to limit the current from the chartplotter to 100 mA. To
select between visual and audible alerts, install a switch.
Wiring a GPSMAP 400/500 Series Chartplotter to a Horn, a Lamp, or Both
+
-
Relay
100 ma max
coil current
Horn
Lamp
GPSMAP
400/500
series
chartplotter
Fuse
3 A
Red
Black (ground)
Yellow (alarm)
Wire color
Battery
10–32 Vdc*
* Certain GPSMAP 400/500 series chartplotters can be connected to higher-voltage power sources. Refer to the Power section of the System Specications on
page 10 for more information.
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