There has been a bit of confusion with the new Lowrance units. Here’s a checklist for any of the new units that take the LGC-2000 antenna.
A Checklist for new units with LGC-2000:
1. BOTH power cables need to be connected, 2 black, 2 red.
2. The shield wire also needs to be connected to ground.
3. The NMEA wires (multicolored set) need to be taped off properly if not being used.
4. Lowrance suggest a direct connection to the battery. Check the manual for instructions.
5. There is a small electrical draw from the GPS antenna even when the unit is off so you will need to rig it accoringly (some type of on/off switch to keep from draining the battery).
If the unit is still not working properly, give the Lowrance techs a call for assistance at 800-324-1356.
If you do all the proper steps above and still get a GPS not responding signal, there is the possibility that the GPS antenna is bad. If you have a buddy that has the LGC-2000 antenna, try that on your unit to determine if the antenna is the problem. If it is, you can simply exchange the GPS antenna and won’t have to re-rig everything else.