Electrical Wiring Diagrams — General Description (Opel Omega A)

1. Electrical wiring diagrams show the circuits that distribute electrical current. Each circuit is shown schematically. The bottom line of the diagram represents the "ground" or negative loop; the numbers below the line are track numbers that make it easier to find the circuits and components using a key.

2. The top line of the diagram is the "supply" or positive loop. The line marked "30" is always the supply, while the line marked "15" is only energized when the ignition is on.

3. The numbers in square brackets on the diagram indicate the chain number where the continuation of the diagram should be looked for.

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