Garmin Fishfinder 160C Owner's Manual - page 16
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Fishfinder 160C Owner’s Manual
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Testing the Transom Mount Installation
Perform this test after you install the Fishfinder. Because you need
water to carry the sonar signal, the Fishfinder does not function
properly with the transducer out of the water. When you place your
boat in the water, check for leaks around the screw holes that are
below the water line. DO NOT leave your boat in the water for an
extended period of time without checking for leaks.
To test the transom mount installation:
1. Begintestingtheinstallationataslowspeed.Ifthesonar
appearstobeworkingproperly,graduallyincreasetheboat’s
speedobservingthesonar’soperation.Ifthesonarsignal
suddenlyislostorthebottomreturnisseverelydegraded,
notethespeedatwhichthisoccurs.
2. Returntheboattothespeedatwhichthesignalwaslost.
Makemoderateturnsinbothdirectionsandseeifthesignal
improves.
3. Ifthesignalstrengthimproveswhileturning,adjustthe
transducersothatitextendsanother1/8"belowthetransom
oftheboat.Itmighttakeseveraladjustmentstoeliminatethe
degradation.
4. Ifthesignaldoesnotimproveitmaybenecessarytomove
thetransducertoadifferentlocation.
Installing the Wiring Harness
The Fishfinder 160C comes with a wiring harness that connects
the unit 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 will void
your warranty. Transducer extension cables are available from your
Garmin Dealer.
If your boat has an electrical system, it may be possible to wire the
unit directly to an unused holder on your current fuse block. If you
are using the boat’s fuse block, remove the in-line fuse supplied with
the unit. You can also wire the unit directly to the battery.
To install the wiring harness:
1. InstalltheRed(+)wireonthepositivebatteryterminal.
2. InstalltheBlack(-)wireonthenegativebatteryterminal.
3. Installa2Ampfuseinthefuseholder(fuseblockonly).
4. Alignthenotchesonthecableplugandbackoftheunit.
Insertthecableintotheconnectorandturnthelockring
counter-clockwiseuntilitstops.
The Fishfinder 160C outputs NMEA data for: Water Depth, Water
Speed and Water Temperature.
To connect the NMEA output to a NMEA device:
ConnecttheBluewiretotheDataInputoftheNMEAdevice.