components of a circuit. Figure AII-7 shows two
typical terminal diagrams: (A) shows the wire numbers
connected to each terminal of a terminal board and (B)
shows the color codes of the wires that are connected to
This has been a brief overview of trouble-shooting
procedures and the use and interpretation of the various
electrical diagrams. The diagrams discussed were
selected because of their simplicity and ease of
interpretation. Many diagrams you will encounter are
far more complex. Begin with the simpler diagrams.
Your proficiency in using the more complex diagrams
will increase with experience.
Figure AII-7.Terminal diagram.