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SECTION VI
ELECTRICAL
WIRING
DIAGRAMS
The
individual
circuit
diagrams
shown on the follow-
lines
and heavily
outlined
sections.
Notes
have been
ing pages
identify
each wire
with
a
de
assigned
added
for clarity
when
specific
res.nren
ents
need
according
to
its usage
in
the
aircraft.
The individual
to
be met.
circuit
components
are
indexed
and listed
in
the
nomenclature
accompanying
each diagram.
Wire bun-
The
wire
codes
used,
closely
follow the
military
dies
and harnesses
are
not
indicated.
The arrange-
numbering
system.
Briefly,
a
wire
code consists
of
ment
of
the
coniponents
in the diagram
was
chosen
a function
letter,
wire
segment
letter,
and
wire
size
for clarity
without
the
attempt
to
indicate
the actual
(American
Wire
Gage).
Frequently
a
suffix
indicating
location
in the aircraft.
ground
(N), phase
(A, B, etc.)
or thermoccuple
material
(alumel,
chromel
etc.)
is added.
Optional
equipment
and changes
have been
noted
by
Electrical
symbols
used
in diagrams
appear
on
pages
placing
them
in emphasized
manner
such as dotted
6-3 and 6-4.
P52A4N
Suffix
Wire Size (A.W. G.)
Wire
Segment
Letter
Wire
Number
Circuit
Function
Letters
A list of circuit
function
designation
follows
A Armaments
B Photographic
C
Control
surfaces;
autopilot
D Instruments
other
than
flight
or engine
instrument,
ammeter,
landing
gear
position,
free
air
temperature,
cabin
pressure,
etc.
E Engine
instrument;
fuel flow,
fuel quantity,
tachometer,
synchroscope,
etc.
F Flight
instrument
G Landing
gear;
actuator,
retraction,
warning,
down lock,
etc.
H Heating
J
Ignition
K Engine
control;
starter,
prop pitch,
prop synchronizer,
etc.
L Lighting
M Miscellaneous
electric;
windshield
wiper,
etc.
P DC power
Q
Fuel and oil; fuel valves,
fuel pump motors,
throttle
control,
oil pumps,
etc.
R Radio;
RC-radio
command,
RM-marker
beacon,
etc.
S Radar;
SA-altimeter,
3S-search,
etc.
T Special
electronics,
TK-telemetry,
TR-receivers,
etc.
U Miscellaneous
electronics
(other
than
RS or T)
V DC power
for AC systems
W Warning
and emergency
X
AC
power
Y Armaments
special
systems
6-1
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