Figure 2-Yoke Mount Drilling Dimensions; Wiring The 941X System - NorthStar 941X Reference Manual

Wiring the 941X
System
electrical power
requirements
Page 102
wipe the unit dry, especially the rear connectors. When not in use, cover
the 941X with the sunshield to protect it from excessive heat.
Figure 2—Yoke Mount Drilling Dimensions
Your Northstar is designed with an internal fusible link to protect against
faulty power wiring. The link consists of a short length of 30 AWG wire
located on the I/O board. If this link becomes open-circuited, carefully
check all power wiring, especially the white and black wires on the power
cable.
Replacement of the fusible link should be performed only by a qualified
electronics technician. Access to the link is gained by removing the 10
outer case screws to open the 941X, then removing the 4 computer board
screws and lifting the computer board out to expose the I/O board below.
The link should be replaced with another short length of 30-gauge wire.
The 941X is a negative-ground system that is reverse-polarity protected:
an internal fuse prevents damage to sensitive components.
The 10-foot power cable wires must be connected as follows:
Positive ( + ) 10–40VDC
Red
Black Negative (–)
White Ground
negative ground only
14-gauge connecting wire (recommended for runs of 15 feet or
more)
16-gauge minimum allowed for runs up to 15 feet
9 — Installation and Interfacing 9 — Installation and Interfacing
9 — Installation and Interfacing 9 — Installation and Interfacing
Rev. D