Antenna unit
Connect the antenna cable to the ANT connector.
Transducer
Connect the transducer cable to the XDR connector.
Water temperature/speed sensor
Connect the water temperature sensor (option) or water temperature/speed sen- sor (option) to the TEMP/SPD connector.
Ground
The display unit contains several
CPUs. While they are operating, they
radiate noise, which can interfere with radio equipment. Ground the unit to
prevent interference. The grounding
wire should be 1.25 sq or larger and as short as possible. Connect the grounding wire to ship's ground. On a
fiberglass boat, it is best to install a ground plate that measures about 20 cm by 30 cm on the outside of the hull bottom to provide a ground point. If this is not practi- cal, the engine block can be used.
Also, the antenna unit
Note: Use a “closed” lug to make the ground connection at the display unit. Do not
use an 
).