Inside the Hull Mounted Transducer
CAUTION! Do not cut or shorten the transducer cable, and try not to damage the cable insulation. Route the
cable as far as possible from any VHF radio antenna cables or tachometer cables to reduce the possibility of
interference. If the cable is too short, extension cables are available to extend the transducer cable up to a total of
50'. For assistance, contact Humminbird Customer Service.
CAUTION! Do NOT mount the cables where the connectors could be submerged in water or flooded. If cables are
installed in a splash-prone area, it may be helpful to apply dielectric grease to the inside of the connectors to
prevent corrosion. Dielectric grease can be purchased separately from a general hardware or automotive store.
3. Insert the transducer cable connector into the appropriate port on the control head, cable collector, or
black box sonar. See your control head installation guide for details.
• The cable connectors are labeled, and there are corresponding labels on the cable collector
and control head. The connectors are keyed to prevent reversed installation, and insertion
should be easy— do not force the connectors into the ports.
• If the connector on the cable is round, it has a screw nut (see the illustration Transducer
Connectors). Hand tighten the screw nut to secure the cable connection. Hand tighten only!
4. Proceed to Installing the Temp Probe (if applicable) or Setting up the Transducer on the Control
Head.
5.
Installing the Temperature Probe (If Applicable)
The Temperature Probe incorporates a temperature-sensitive probe in a high impact plastic housing. The
probe is intended for installation on the transom and will work well on almost any boat.
NOTE: The temperature probe is only available on certain models. Contact Customer Service for details.
Supplies: In addition to the parts supplied, you will need a hand drill with various size bits, marine-grade
silicone sealant, and various hand tools.
Temperature Probe Mounting Location: Locate an area on the transom of your boat 6" to 8" or farther
from the transducer(s). This area must stay in contact with the water at high speeds. Do not mount the
sensor directly in front of the propeller or outdrive, and make sure that there are no protrusions such as
ribs, rows of rivets, or transducers directly forward of the mounting location, as these may affect the flow
of water over the temperature probe.
1. Either route the cable from the in-hull mounted transducer over the top of the transom, or drill a 5/8"
hole in the transom directly above the sensor, above the waterline.
CAUTION! The temperature probe incorporates a temperature-sensitive probe in a high-impact plastic housing with
10 feet of cable. Do not cut or shorten the temperature probe cable, and try not to damage the cable insulation. The
probe is intended for installation on the transom and will work well on almost any boat.
2. Assemble the sensor in the clamp, and align it on the transom so the lower edge of the temperature
probe sensor is flush with the hull of the boat, and so that it doesn't extend below the hull. Mark
the hole location.
3. Drill a 1/8" mounting hole approximately 3/4" deep.
NOTE: On fiberglass hulls, it is best to start with a smaller bit and use progressively larger drill bits to reduce the
chance of chipping or flaking the outer coating.
4. Seal the mounting hole with marine-grade silicone sealant, and attach the sensor to the transom using
the provided screw.
530509-6_E
In-Hull Transducer with External
Temperature Probe
Transducer Connectors
screw nut
Hexagon-Shaped
Connector
Connector
3
Round
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