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If the base of the transom has a radius, fill the gap between the
transom and the sensor with the caulking compound. This will help
ensure a smooth water flow.
Route the sensor's cable through or over the transom to the sonar unit.
If you need to drill a hole in the transom to pass the connector through,
the required hole size is 5/8".
Caution:
If you drill a hole in the transom for the cable, make sure it is
located above the waterline. After installation, be sure to seal the
hole with the same marine grade above- or below-waterline
sealant used for the screws.
The sensor is now ready for use. Connect the sensor to the accessory
socket on the back of your unit. If you have any questions concerning
the installation of the sensor, please contact your local boat dealer.
Power Connections
The unit works from a 12-volt battery system. You can attach the
power cable to your boat's accessory or power buss (or directly to the
battery). If you use an accessory buss but have problems with electrical
interference, attach the power cable directly to the battery. If the cable
is not long enough, splice #18 gauge wire onto it.
An optional 8-foot, CA-4 external power cable with a cigarette lighter
adapter is available from Lowrance.
If possible, keep the power cable away from other boat or vehicle wiring,
especially the engine's wires. This will provide the best isolation from
electrical noise. The power cable has two wires, red and black. Red is the
positive lead, black is negative or ground. Make sure to attach the in-line
fuse holder to the red lead as close to the power source as possible.
For example, if you have to extend the power cable to the battery or power
buss, attach one end of the fuse holder directly to the battery or power buss.
This will protect both the unit and the power cable in the event of a short. It
uses a 3-amp fuse.
