Select your product to confirm this information applies to you
Installing a NMEA 0183 GPS Antenna (HVS) to a Garmin® Chartplotter
To determine the wiring for a chartplotter and antenna combination, select the group the chartplotter belongs to.
GPSMAP® Chartplotter Series
GPSMAP® 2xxx chartplotters
GPS 17 / GPS 17N
GPS 17x / GPX 19x* / GPS 24xd NMEA 0183
*The 19x HVS and GPS 24xd comes with an orange resistor wire that must be connected in between the two orange wires. 
GPSMAP® 3xxx chartplotters
GPS 17 / GPS 17N
GPS 17x / GPX 19x* / GPS 24xd NMEA
*The 19x HVS comes with an orange resistor wire that must be connected in between the two orange wires
GPSMAP® 4xxx chartplotters
GPS 17 / GPS 17N
GPS 17x / GPS 19x* / GPS 24xd NMEA 0183
*The 19x HVS comes with an orange resistor wire that must be connected in between the two orange wires
GPSMAP® 5xxx chartplotters
GPS 17 / GPS 17N
GPS 17x / GPS 19x* / GPS 24xd NMEA 0183
*The 19x HVS comes with an orange resistor wire that must be connected in between the two orange wires
GPSMAP® 6xxx chartplotters
GPS 17 / GPS 17N
GPS 17x / GPS 19x / GPS 24xd NMEA 0183
GPSMAP® 70xx chartplotters
GPS 17 / GPS 17N
GPS 17x / GPS 19x / GPS 24xd NMEA 0183
GPSMAP® 74xx chartplotters| GPSMAP® 76xx chartplotters
GPS 17 / GPS 17N
Once connected, see
'Port settings
' for setting up the port correctly on the device. 
GPS 17x / GPS 19x / GPS 24xd HVS
Once connected, see
'Port settings
' for setting up the port correctly on the device. 
GPSMAP® 82xx chartplotters
GPS 17 / GPS 17N
GPS17x / GPS 19x /GPS 24xd HVS
GPSMAP® 8400 chartplotters 10", 12", 16" | GPSMAP® 8600 chartplotters 10", 12", 16"
GPS 17 / GPS 17N
Once connected, see
'Port settings
' for setting up the port correctly on the device. 
GPS 17x / GPS 19x / GPS 24xd NMEA 0183
Once connected, see
'Port settings
' for setting up the port correctly on the device.
GPSMAP® 8400 chartplotters 17", 22", 24" | GPSMAP® 8600 chartplotters 17", 22", 24"
GPS 17 / GPS 17N
Once connected, see
'Port settings
' for setting up the port correctly on the device.
GPS 17x / GPS 19x / GPS 24xd NMEA 0183
Once connected, see
'Port settings
' for setting up the port correctly on the device.
GPSMAP® 5x7 chartplotters| GPSMAP® 7x1 chartplotters |GPSMAP® 8x0 chartplotters |GPSMAP® 10x0 chartplotters
GPS 17 / GPS 17N
Once connected, see
'Port settings
' for setting up the port correctly on the device.
GPS 17x / GPS 19x / GPS 24xd NMEA 0183
Once connected, see
'Port settings
' for setting up the port correctly on the device.
GPSMAP® 7x2 chartplotters | GPSMAP® 7x3 chartplotters | GPSMAP® 9x2 chartplotters |GPSMAP® 9x3 chartplotters |GPSMAP® 10x2 chartplotters |GPSMAP® 12x2 chartplotters |GPSMAP® 12x3 chartplotters Plus, Touch models| GPSMAP® 16x3 chartplotters
GPS 17 / GPS 17N
Once connected, see 'Port settings ' for setting up the port correctly on the device.
NOTE: If the resistor is used on the orange wire, set Port to NMEA standard. If no resistor, use NMEA high speed.
The image below does not specify all units, but it applies to all units listed in the title. 
GPS 17x / GPS 19x GPS 24xd NMEA 0183
Once connected, see 'Port settings ' for setting up the port correctly on the device.
NOTE: If the resistor is used on the orange wire, set Port to NMEA standard. If no resistor, use NMEA high speed.
The image below does not specify all units, but it applies to all units listed in the title.
Echomap™ Chartplotter Series
echoMAP™ 50s chartplotters | echoMAP™ 50dv chartplotters | echoMAP™ 70s chartplotters | echoMAP™ 70dv chartplotters
GPS 17 / GPS 17N
Once connected, see
'Port settings
' for setting up the port correctly on the device. 
GPS 17x / GPS 19x / GPS 24xd NMEA 0183
Once connected, see
'Port settings
' for setting up the port correctly on the device. 
echoMAP™ CHIRP chartplotters | ECHOMAP™ Plus chartplotters | ECHOMAP™ Ultra chartplotters | ECHOMAP™ UHD chartplotters
GPS 17 / GPS 17N
Once connected, see 'Port settings' for setting up the port correctly on the device. 
GPS 17x / 19x / GPS 24xd NMEA 0183
Once connected, see 'Port settings' for setting up the port correctly on the device. 
Port settings
Adjust the communications ports listed below to match the GPS antenna installed on the vessel. See the owner's manual for device-specific steps; .
echoMAP™ series:
Select the appropriate Serial Port
GPS 17, 17N, 17x - Select NMEA Standard
GPS 19x / GPS 24xd - Select NMEA High Speed
GPSMAP™ series:
Select the appropriate input port
GPS 17, 17N, 17x - Select NMEA Standard
GPS 19x / GPS 24xd - Select NMEA High Speed
Select the appropriate output port
GPS 17, 17N, 17x - Select NMEA Standard
GPS 19x / GPS 24xd - Select NMEA High Speed
Checking if the antenna is transmitting:
GPS 17 / 17N HVS White is the output wire
GPS 17X / 19X HVS / GPS 24xd "Gray" is the output wire
Place the positive lead of the Volt meter on the output wire and put the negative lead to ground. If there is a pulse in the reading the antenna is transmitting. If there is no pulse and it is a steady reading it is not transmitting and will need to be replaced.
Cannot aquire GPS NO GPS HVS Bare Wire GPS Satellite no signal can't find gps Why am I not able to acquire satellites 2000 3000 4000 5000 6000 7000 8000