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Pub. 988-0154-651 

LGC-3000, LGC-Baja 

GPS Modules 

Installation Instructions 

This instruction sheet tells how to install your LGC-3000 or LGC-Baja 
GPS module and connect it to a NMEA 2000

®

 network using 

LowranceNET

 network components. 

The LGC-Baja is a ruggedized module designed to withstand the rigors of off-

road automobile racing. It works just like the LGC-3000, and for simplicity 

we will only refer to the LGC-3000 in the rest of this instruction sheet. 
The LGC-3000 GPS module, like the other Lowrance Electronic Probe 

(EP) sensors, is designed only for use with a NMEA 2000 Network. It 

MUST

 be connected to a NMEA 2000 network or it 

WILL NOT

 function. 

CAUTION: 

Installing LowranceNET NMEA 2000 devices is 

significantly 

different

 from installing earlier Lowrance components without 

NMEA 2000 features. You should read all of the installation in-
structions before proceeding. You should decide where to install 
all components before drilling any holes in your vessel or vehicle. 

Some sonar or GPS display units may require: 1. a software upgrade to 

display NMEA 2000 data correctly; and 2. a manual addendum describ-

ing how to operate the sensor. You can download these free and get ad-
ditional information on the NMEA 2000

®

 compatible LowranceNET

 

system at our web site, 

www.lowrance.com

All Lowrance NMEA 2000 capable devices are either NMEA 2000 certi-

fied or certification is pending. See our web site for the latest product 

status information. 

     

 

LGC-3000 Module, bottom view (left) and top view (right). 

 

Summary of Contents for LGC-3000

Page 1: ...unction CAUTION Installing LowranceNET NMEA 2000 devices is significantly different from installing earlier Lowrance components without NMEA 2000 features You should read all of the installation in structions before proceeding You should decide where to install all components before drilling any holes in your vessel or vehicle Some sonar or GPS display units may require 1 a software upgrade to dis...

Page 2: ...ismount any antenna mod ule similar to the LGC 3000 LGC Baja LGC 2000 LGC 12W or EGC 12W An optional marine pole mount and optional magnet for temporary mounting on any ferrous metal surface are also available For ordering information see the end of this instruction sheet Tools and Supplies Other supplies are not included unless otherwise indicated Recom mended tools are pliers and a flathead scre...

Page 3: ...r an tenna s beam Radar radiates high energy signals that can in terfere with GPS signal reception In an automobile you may achieve good reception by simply placing the external antenna on the top of the dash at the base of the windshield A piece of the rubber non skid shelf liner material available in recrea tional vehicle supply stores will help hold the antenna in place This may not work well i...

Page 4: ... surface using the supplied 4 mm screws and the lock washers Route the cable to where it connects to the network and plug it in The GPS module installation is finished GPS module mounting template Drill size 3 16 4 75 mm Drill four places Drill size 7 8 22 mm if needed ...

Page 5: ...e Pole Mount The GPS module attaches to the optional pole mount adapter with the supplied 4 mm screws You can route the cable through the notch in the module housing and down the side of the pole Or you can pass it down through the pole mount adapter and run the cable inside the pole The 1 14 threads on the pole mount adapter fit a standard marine antenna mounting pole Pole Mount Power Connections...

Page 6: ...basic power connection options which are shown in the two diagrams on pages 7 and 8 Read the following instruc tions carefully to determine which power connection applies to your display unit and GPS module Depending on your con figuration you may not use all of these wires Caution All wires in the power data cable have bare ends for easier in stallation The bare ends on any unused wires should be...

Page 7: ...e NMEA 2000 net work is powered This is shown in Power Diagram A below The NMEA 2000 power cable must be connected to power even if your only NMEA 2000 device is the GPS module A display unit and a GPS mod ule form a simple NMEA 2000 network However never connect multiple power sources to a NMEA 2000 network If you have a network that is already powered see diagram B on page 8 Power Diagram A Use ...

Page 8: ...ed you do not need to connect the NMEA 2000 Power cable You can connect the LGC 3000 directly to the display unit or anywhere along the network and it will operate Never attach two power sources to a single NMEA 2000 bus If you do need to power your NMEA 2000 bus attach the NMEA 2000 Power cable to an accessory switch as indicated in Power Diagram A on page 7 The NMEA 2000 Power cable s red wire s...

Page 9: ...T connector two 120 ohm terminators and any extension cables needed to connect them The diagram below details how to set up that type of network LGC 3000 and display unit as an expandable NMEA 2000 network The diagram above has a double T connector with two 120 ohm termina tors one at each end of the connector It is easy to expand this network by removing a terminator from one end of the double T ...

Page 10: ...the backbone are similar to telephone jacks spread throughout a house To pick up a phone and be able to hear a conversation from another phone in the house both phones must be connected to the main phone line In similar fashion only sensors and display units plugged into the NMEA network can share information The network backbone is like the phone wiring that runs throughout a home It connects the...

Page 11: ...tor be tween two T connectors between a T connector and the end terminator or between two backbone extension cables If you want to add a node at the end of the backbone network bus remove the terminator from the last connector like the figure above Install the new T connector and attach the terminator to the side of the connector Additional Network Information Further instructions on creating or e...

Page 12: ...12 Notes ...

Page 13: ...13 Notes ...

Page 14: ...14 Notes ...

Page 15: ...EPLACEMENT OR REFUND AS JUST DESCRIBED IS THE EXCLUSIVE REMEDY AVAILABLE TO YOU AGAINST US FOR ANY DEFECT MALFUNCTION OR NON CONFORMITY CONCERNING THE PRODUCT OR FOR ANY LOSS OR DAMAGE RESULTING FROM ANY OTHER CAUSE WHATSOEVER WE WILL NOT UNDER ANY CIRCUMSTANCES BE LIABLE TO ANYONE FOR ANY SPECIAL CONSEQUENTIAL INCIDENTAL OR OTHER INDIRECT DAMAGE OF ANY KIND Some states do not allow the exclusion ...

Page 16: ...ry source for sonar and GPS products manufac tured by Lowrance Electronics and Eagle Electronics To order Lowrance or Eagle accessories please contact 1 Your local marine dealer or consumer electronics store To locate a Lowrance dealer visit the web site www lowrance com and look for the Dealer Locator To locate an Eagle dealer visit the web site www eaglesonar com and look for the Dealer Locator ...

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