Fishnder 340C Owner’s Manual
InstAllIng the fIshfInder 340c > InstAllIng the WIrIng hArness
Installing the Fishnder 340C to a Garmin CANet
The Fishnder 340C is a CANet compatible sonar device. Using
the CANet - if applicable - optimizes the performance of CANet-
compatible units, allowing sonar information from the Fishnder
340C to be shared with up to two CANet compatible Garmin
GPS units. A standard NMEA connection only allows depth,
temperature, and speed information to be sent to a single GPS
device, where a CANet connection provides full sonar readings,
including Ultrascroll, so you can view and control the same
information on your compatible GPS unit(s) as you can on your
Fishnder 340C.
To use the Garmin CANet with your Fishnder 340C,
you need to obtain a CANet Kit. Contact your Garmin dealer,
or visit www.garmin.com.
Included Equipment in a CANet Kit:
• 40 ft (12.19 m) CANet Extension Cable
• 2 CANet Terminators
• 7 3-Wire Connectors
The CANet Kit contain installation instructions as
well. If you need additional help, please contact Garmin
Product Support.
To install the 3-Wire Connector:
1. Insert up to wires into the 3-wire connector. Do not strip
the wire insulation. See the CANet Terminator Connection
diagramonthenextpage.
2. Useastandardpairofplierstofullydepresstheredbutton
into the connector.
3. Wipe the excess water repellent gel from the connection.
CANet Notes:
• Power and ground wires require 18 AWG. You can extend
the CANet wiring of the GSD 22 power/data cable up to 80
ft (24.38 m) total length using the CANet Connections Kit.
• The CANet Extension Cable can support a maximum of two
display units and one sonar unit.
• The maximum length of cable from the CANet Extension
Cable to the sonar or display units is 6 ft.
• Refer to the chartplotter’s installation instructions for wiring
the GPS 17 sensor and other devices.
• Ground the drain wire on the rst display unit. Do not
ground the drain wire on the subsequent display units or the
sonar unit.
• The CANet Extension Cable Black wire is reserved for
future use. When inserting a CANet unit on the CANet
Extension Cable, reconnect all wires according to their color.
