Use of wiring diagrams

If you need to determine a malfunction in the electrical system or additionally install electrical fittings, you can not do without a wiring diagram. Based on it, the path of the current and, thereby, the connection of the wires is revealed. The corresponding electrical circuit must be closed, otherwise the electric current may not flow. This, for example, is not sufficient when a voltage is applied to the positive terminal of the headlamp, unless an electrical circuit is simultaneously closed via the connection to the housing.

Switches, relays, fuses, measuring devices, electric motors or other electrical elements may be installed in individual electrical circuits. In the explanation to the diagram, in addition to the diagram itself, switching parts are given with the corresponding position coordinates. Each circuit diagram is divided into search fields by letters (from A to M) on the left and right edges, and numbers on the top and bottom edges. The found communication detail of the circuit is located at the point of intersection of the horizontal and vertical lines that are meant, emanating from the corresponding letter and belonging to this figure, which are located in the explanation behind the circuit element in the form of position coordinates.

Vehicle variants and special equipment are framed by a dash-dotted line and are marked with a symbol, which is shown on the following page or in the corresponding explanation. The direction of movement in the diagram is represented by the symbol "X". Numbers at the junctions of wires with consumers, switches, etc. coincide with the marking of these parts in the car. In this case, slightly larger numbers indicate the marking of the terminals of a separate electrical circuit. In order to better trace the passage of the wires, the individual connecting wires have different colors.