Electrical Wiring Diagrams

DIN Standard 72 552
This standard applies to the terminal designations for circuits. The purpose of the terminal
designation system is to enable accurate connection identification from conductors (wires) to
various components when diagnosis and repair is necessary. Examples of DIN standards for
terminal designations are:
� 15 Ignition switched on and start
� 30 Battery +
31 Ground[Type a quote from the document or the summary of an interesting point. You can position
the text box anywhere in the document. Use the Text Box Tools tab to change the formatting of the pull
quote text box.]
�
� 31b Switched Ground
� 50 Starter control switched on only
Wiring
Wires are conductors that carry current to components, and are
usually indicated by a solid line. A wire shown as a dashed line in a
wiring diagram indicates that the wire does not apply to all vehicles
and is noted in the wiring diagram legend.
Wire colors
Knowing the standards for wiring colors makes the job of reading
and interpreting them easier. Some of the common standards
include wiring color for specific circuits, as well as the terminal
designation.
For example:
Red . . . . . . . . . . . . . . . . . . . Battery +
Green. . . . . . . . . . . . . . . . . . Ignition (1)
Brown . . . . . . . . . . . . . . . . . Ground (31)
Yellow . . . . . . . . . . . . . . . . . Headlights (58)
Wire colors are shown as abbreviations of the German word for the color.
bl . . . . . . . . . . . . . . . . . . . . . Blue
br. . . . . . . . . . . . . . . . . . . . . Brown
ge . . . . . . . . . . . . . . . . . . . . Yellow
gn . . . . . . . . . . . . . . . . . . . . Green
ro. . . . . . . . . . . . . . . . . . . . . Red
sw . . . . . . . . . . . . . . . . . . . . Black
li . . . . . . . . . . . . . . . . . . . . . Violet
ws . . . . . . . . . . . . . . . . . . . . White
Wire Gauge Tool