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12 Fishfinder 90/140 Owner’s Manual
INSTALLING YOUR FISHFINDER > INSTALLING THE WIRING HARNESS
Installing the Wiring Harness
The Fishfinder comes with a wiring harness that connects
the Fishfinder to power and the transducer with one
easy-to-remove connection. 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 Fishfinder
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 Fishfinder. You can also wire the
Fishfinder directly to the battery.
CAUTION: The Fishfinder input voltage is 10–18
volts DC. Do not exceed this voltage, because this can
damage the Fishfinder and void the warranty.
To install the wiring harness:
1. Determine the polarity of the power source using a
test light or volt meter.
2. Install the red (+) wire on the positive fuse holder or
battery terminal.
3. Install the black (-) wire on the negative fuse holder
or battery terminal.
4. Install a 2 Amp fuse in the fuse holder (fuse block
only).
5. Align the notches on the cable plug and on the back
of the Fishfinder. Insert the cable into the connector
and turn the lock ring counter-clockwise until it stops.