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Tools Needed

• Drill

Bail mount: drill bits appropriate for the surface and hardware

Flush mount: 14 mm (

9

/

16

 in.), 6 mm (

1

/

4

 in.) and 3.6 mm (

9

/

64

 in.) (with nut plate), or 3.2 mm (

1

/

8

 in.) drill 

bit (with no nut plate)

• #2 Phillips screwdriver
• Jigsaw or rotary tool
• File and sandpaper
• Marine sealant (recommended)

Mounting Considerations

NOTICE

This device should be mounted in a location that is not exposed to extreme temperatures or conditions. The 
temperature range for this device is listed in the product specifications. Extended exposure to temperatures 
exceeding the specified temperature range, in storage or operating conditions, may cause device failure. 
Extreme-temperature-induced damage and related consequences are not covered by the warranty.

When selecting a mounting location, you should observe these considerations.
• The location should provide optimal viewing as you operate your boat.
• The location should allow for easy access to all device interfaces, such as the keypad, touchscreen, and card 

reader, if applicable.

• The location must be strong enough to support the weight of the device and protect it from excessive 

vibration or shock.

• To avoid interference with a magnetic compass, the device should not be installed closer to a compass than 

the compass-safe distance value listed in the product specifications.

• The location must allow room for the routing and connection of all cables.
• The location must not be a flat, horizontal surface. The location should be in a vertical angle.

The location and viewing angle should be tested before you install the device. High viewing angles from 
above and below the display may result in a poor image.

2

Summary of Contents for GPSMAP 12 2 Series

Page 1: ...ginning to install the device To avoid possible personal injury or damage to the device or vessel before applying power to the device make sure that it has been properly grounded following the instruc...

Page 2: ...by the warranty When selecting a mounting location you should observe these considerations The location should provide optimal viewing as you operate your boat The location should allow for easy acce...

Page 3: ...yer when the screws are tightened You can use a bail mount bracket not included to bail mount the device on a flat surface 1 Using the bail mount bracket as a template mark the pilot holes 2 Drill the...

Page 4: ...trim caps slide the pry tool to the center and remove the trim caps NOTICE Use a plastic pry tool when possible Using a metal pry tool such as a screwdriver can damage the trim caps and the device 8...

Page 5: ...device after you mount it connect all necessary cables to the device before placing it into the cutout NOTICE To prevent corrosion of the metal contacts cover unused connectors with the attached weath...

Page 6: ...essary to extend the NMEA 0183 or alarm wires you must use 22 AWG 33 mm wire This cable provides one differential NMEA 0183 input and output port Item Wire Color Wire Function Red Power Black Ground p...

Page 7: ...device such as a FLIR camera to a Garmin Marine Network Connecting a Power over Ethernet PoE device directly to a Garmin Marine Network chartplotter damages the Garmin chartplotter and may damage the...

Page 8: ...0 devices will drain your battery if the NMEA 2000 power cable is connected to the battery directly This device can connect to a NMEA 2000 network on your boat to share data from NMEA 2000 compatible...

Page 9: ...plotter and you can connect up to three NMEA 0183 devices in parallel to the Tx port to receive data output by this chartplotter See the NMEA 0183 device installation instructions to identify the tran...

Page 10: ...armin device Item Description Power source Power NMEA 0183 cable NMEA 0183 device Item Garmin Wire Function Garmin Wire Color NMEA 0183 Device Wire Function Power Red Power Power ground Black Power gr...

Page 11: ...ower Cable Pinout Pin Number Wire Function Wire Color NMEA 0183 Tx A Out Blue NMEA 0183 Rx A In Brown NMEA 0183 Tx B Out Gray NMEA 0183 Rx B In Violet Alarm Yellow Accessory on Orange Ground shield Bl...

Page 12: ...hese considerations The alarm circuit switches to a low voltage state when the alarm sounds The maximum current is 1 A and a relay is needed to limit the current from the chartplotter to 1 A To manual...

Page 13: ...ing NMEA 2000 LEN 9 Vdc 2 NMEA 2000 draw 75 mA max Compass safe distance 65 cm 25 5 in Memory card 2 SD card slots 32 GB max card size Wireless frequency transmit power 2 4 GHz 15 26 dBm maximum 10x2...

Page 14: ...control 127245 Rudder 127250 Vessel heading 127258 Magnetic variance 127488 Engine parameters Rapid update 127489 Engine parameters Dynamic 127493 Transmission parameters Dynamic 127505 Fluid level 12...

Page 15: ...Rate of turn 127257 Attitude 127498 Engine parameters Static 127503 AC input status obsolete 127504 AC output status obsolete 127506 DC detailed status 127507 Charger status 127509 Inverter status 12...

Page 16: ...origin to destination GPBWC BWC Bearing and distance to waypoint GPGGA GGA Global positioning system fix data GPGLL GLL Geographic position latitude and longitude GPGSA GSA GNSS DOP and active satelli...

Page 17: ...ssage You can purchase complete information about National Marine Electronics Association NMEA format and sentences from www nmea org 2020 Garmin Ltd or its subsidiaries Garmin the Garmin logo and GPS...

Page 18: ...2020 Garmin Ltd or its subsidiaries support garmin com...

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