A SERVICE OF

logo

Open as PDF
next previous
Fishnder 340C Owner’s Manual 
InstAllIng the fIshfInder 340c > InstAllIng the WIrIng hArness
Installing the Wiring Harness
The Fishnder comes with a wiring harness that connects the
Fishnder to power and the transducer with one easy-to-remove
connection and provides interface capabilities for connecting
external devices. The color code in the diagram (see page 17)
indicates the appropriate harness connections. The replacement
fuse is a AGC/3AG - 3 Amp fuse. If it is necessary to extend the
power wires, use 22 AWG wire. DO NOT cut the transducer cable,
because this voids your warranty. If your boat has an electrical
system, you might be able to wire the Fishnder directly to an
unused holder on your current fuse block. If you are using the
boat’s fuse block, remove the in-line fuse holder supplied with the
Fishnder. You can also wire the Fishnder directly to the battery.
The Fishnder input voltage is 33 volts DC. Do
not exceed this voltage, because this can damage the Fishnder
and void the warranty.
During a typical installation, use only the Red and
Black wires. The other wires do not have to be connected
for normal operation of the Fishnder unit. For information
on connecting to a NMEA or CANet compatable device, see
pages 17-19.
To install the wiring harness:
1. Useatestlightorvoltmetertodeterminethepolarityofthe
voltage source.
2. ConnecttheRed(+orpositive)wiretothepositivevoltage
terminal. (If you use the boat’s fuse block, route the positive
connectionthroughthefuse,asshownonthediagram.)
3. ConnecttheBlack(-orground)wiretothenegativevoltage
terminal.
4. Install or check the 3-Amp fuse (on the boat’s fuse block or
inthein-lineholder).
5. Alignthenotchesonthecableplugandonthebackofthe
Fishnder.Insertthecableintotheconnector,andturnthe
lock ring counter-clockwise until it stops.
—
+
To 0-33 volt boat supply
2A
-
+
Boat ground
3-Amp
fuse
To Fishnder 340C