NorthStar 972 Installation Manual page 16

SECTION TWO: Installing and wiring the 972
If you lengthen the power cable, use an external fuse at the battery end as an added safety
precaution. The fuse size should be chosen to be appropriate for the size of the smallest
conductor in the circuit. See the NMEA or American Boating and Yachting Counsel specifications to
find the correct fuse for your wiring.
For the best protection from noise, connect the power wiring directly to the battery or dedicated
electronics bus. The green wire should be left unconnected. The power cable has an inline fuse to
protect the vessel's wiring, and prevent electrical fires and damage to the unit. If you shorten or
lengthen this cable, be sure to keep the inline fuse intact (or provide circuit breaker protection).
Spare in-line fuses are not supplied with the unit and should be purchased locally to avoid loss of
function.
Connect the wires in the power cable as follows.
• red → positive (+)
• black → negative (–)
• green → no connection
Page 12
NOTE: The green wire should be left unconnected, and must be capped off
and securely insulated.
972 Installation Manual, Rev. B