Garmin FishFinder 340C Owner's Manual page 22

I F 340C >
NSTALLING THE ISHFINDER
To 10-33 volt boat supply
+
3-Amp
fuse
-
Boat ground
16
I W H
NSTALLING THE IRING ARNESS
—
+
To Fishfinder 340C
The Fishfinder 340C can be connected to another piece of NMEA
compatible electronic equipment, such as a Garmin GPS (Global
Positioning System). If equipped with a capable transducer, the
Fishfinder 340C receiver can send depth, temperature, and speed
information. It can also mark a location (see page 41) that can be
displayed on another device and can accept GPS navigational data,
such as position, time, course, or distance. Refer to the wiring
diagram for interfacing the Fishfinder 340C with other devices (see
page 18).
To install the wiring harness to a GPS or other NMEA
device:
1. Follow the voltage source installation steps (see page 15).
For Garmin units, the ground (Black) wires serve as data
ground and must be attached together or on the same
terminal. Refer to the wiring diagram of your GPS unit for
wire identification.
2. Connect the Blue (Data OUT) wire from the Fishfinder to the
Data IN wire on the GPS/NMEA harness.
3. Connect the Brown (Data IN) wire from the Fishfinder to the
Data OUT wire on the GPS/NMEA harness.
4. Set the Fishfinder 340C NMEA Input/Output to On (page
41). For Garmin GPS units, set the communications
interface to NMEA/NMEA, NMEA In/NMEA Out, or NMEA.
Fishfinder 340C Owner's Manual