Electrical/Electronic Drawings, Continued
Aircraft wiring
identification
coding
Part
Function
(Continued)
V
DC power and dc control wires for ac systems
W
Warning and emergency
X
AC power
Y
Armament special systems
Electronic
prints
Electronic prints include isometric wiring diagrams, elementary wiring
diagrams, block diagrams, schematic diagrams, and interconnection
diagrams. The functions of electronic prints and electrical prints are the
same except that electronic prints are generally harder to read because they
are more detailed and complex. Electronic prints often appear with color
coded wiring as shown in the following list:
Circuit
Color
Grounds, grounded elements and returns
Black
Heaters or filaments, off ground
Brown
Power supply, B plus
Red
Screen grids
Orange
Cathodes
Yellow
Control grids
Green
Plates
Blue
Power supply, minus
Violet
AC power lines
Grey
Miscellaneous, above or below ground returns
White
Continued on next gage
4-34
