3.1 How To Read Volkswagen Current Flow Diagrams

The circuit diagrams presented in this manual are organized to indicate current flow, from positive to negative, in the electrical system. This is different from other types of wiring diagrams that actually show the routing of the wiring harness.

As a general rule, current flows from positive (+) at the top of the diagram to negative (-) at the bottom (which represents ground). One exception to this is the fuse/relay panel's internal ground circuit, labeled with the terminal number 31. See Terminal and Circuit Identification for further information.

Fig. 3-1 and Fig. 3-2 are examples of Volkswagen current flow diagrams, showing the meanings of the various markings. These are general examples. They do not show all of the schematic symbols used. For a complete listing of the symbols, see CURRENT FLOW DIAGRAMS.

Fig. 3-1. Sample current flow diagram for Jetta models and later Golf and GTI models.

Fig. 3-2. Sample current flow diagram for early Golf and GTI models.

NOTE -

On Jetta and later Golf and GTI diagrams, the current tracks are numbered for use with the diagram index. If a wire ends at a number inside a square box, that number indicates the current track where the wire continues.

NOTE -

A key to the wire color codes is found on each diagram. The colors shown in the diagrams are as accurate as possible. Some wire colors on a specific car may differ from the colors shown, however, due to running production changes.

NOTE -

Thin black lines are not always actual wires. When used to show current flow to ground, they may indicate a direct connection such as a switch threaded into the engine block.

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