Figure 3-Rear Connectors - NorthStar 941X Reference Manual

power wiring
Rev. D
We strongly recommend (as a good safety practice) that your 941X be
connected to an external circuit breaker or fuse located near the battery
or breaker box. The internal fuse is designed to protect the 941X itself;
the external fuse or breaker is intended to protect the vessel wiring and
prevent electrical fires. The power wiring should be connected directly to
the battery when possible for optimum noise immunity.
J1 Power Connector (3 wire)
J2 Main I/O Interface Connector (18-wire)
J3 Auxiliary (future expansion—10 wire)
J4 GPS Antenna Connector (BNC)
J5 DGPS Antenna Connector (UHF)
Figure 3—Rear Connectors
The 941X should be connected to a source of 10- to 40-volt electrical
power, using at least 16-gauge wire. A 10-foot power cable is supplied
with your unit, and should be sufficiently long for most installations. If it
is necessary, however, to lengthen the power cable, you may extend it to
a maximum of 25 feet without adversely affecting the operation of the
unit.
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