Chapter 2: Installation 37
12. Attach the connector nut to thecable per instructionsin Trans-
ducer Cable Connections on page 39.
13. Attach the assembled connector cable to the transducer.
14. Routetheotherendofthecabletothefishfinder,beingcarefulnot
to tear the cable jacket when passing it through the bulkhead(s)
and other parts of the boat. To reduce electrical interference, sep-
arate the transducer cable from other electrical wiring and the
engine.
15. Coilanyexcess cable andsecureit in place usingtie-wrapsto pre-
vent damage.
Note:If you are using an extension cable, be sure to locatethe mated
3-pinconnectorswellabovethebilgewaterline.To facilitatethis,use
cable clamps on either side of the connection.
Installation in a Cored Fiberglass Hull
Installation ina cored hull is difficult.The objective is to bond the
sensortotheinsidesurfaceofthehull’souterskinwhilepreventing
any moisture from penetrating the core.
CAUTION:
Thereisnowayto determine if the outerskin is solid (no trapped
air bubbles in the fiberglass) at the selected location before
cuttingtheinnerskin.
WARNING:
Always wearsafety gogglesanda dust mask.
1. Usinga 4" (100 mm)hole saw, cutthroughtheinner skinand the
core at the selected location (see Figure 2-18 ).Thecorematerial
can be verysoft. Apply only lightpressure to the hole saw after
cutting throughthe inner skin to avoid accidentally cutting the
outer hull.
2. Removethe plug of core material, so the inner core of the hull is
fully exposed.Sand the inside surfaceof the outer skin using a
miniaturediscsander.Slightlyundercutthesurroundingcoringif
possible.
3. Clean and dry both the inside surface of the outer skin and the
housingwitha weak solvent,such asalcohol,to removeanydust,
grease or oil.
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