V50 L5-2.4L VIN 39 B5244S7 (2005)
The descriptions below apply in general to all wiring diagrams, although not all sections are necessarily contained here.
A. Component Designation
Every component has a component designation that consists of two parts.
The first part is a type number that describes the type of component in question, for example 3/xx.
The second part of the designation is a serial number, for example. x/2.
Together, this constitutes a component designation, for example 3/2.
There is a list of components at Diagram Legend, where, with the help of the component designation, you can read off the name of the component, for