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SECTION TWO: Installing and wiring the 958
958 Installation Manual, Rev. A1 Page 9
If you lengthen the power cable, use an external fuse at the battery end as an added safety
precaution. The fuse size should match the size of the wiring on the vessel. See the NMEA or
American Boating and Yachting Counsel specifications to find the correct fuse for your cable.
For the best protection from noise, connect the power cable directly to the battery or dedicated
electronics buss. The green ground wire should be connected to ship’s ground directly. The power
cable has an inline fuse to protect the vessel’s wiring, and prevent electrical fires and damage to the
958. If you shorten this cable, be sure to keep the inline fuse intact. The wires in the power cable
must be connected as follows.
•
red → positive(+)
•
black → negative(–)
•
green → ship’s ground
NOTE:
Ground the 958 to the vessel to eliminate interference. Without an
earth grounding, performance may be reduced. Secure the green wire
to the vessel’s nearest grounding point. If a noise-free earth grounding
point isn’t available, cap and insulate the green wire—it shouldn’t be
used when an earth ground isn’t available, or with systems using
“floating” grounds.