Circuit Numbering and Wire Identification

Ford Motor Company uses three different circuit numbering conventions: Standard Circuit Numbering System, Global Circuit Numbering System, and New Global Circuit Numbering System (NGCNS). With each, the circuit number (which identifies a specific circuit function) is followed by the wire color.

Examples:

Fig 1: Circuit Numbering And Wire Identification Example

Courtesy of FORD MOTOR CO.

The wire identification consists of a basic color and possibly a stripe, and is determined directly from the wire's circuit number. In the schematics, the wire colors are indicated next to the wires. The colors are abbreviated using the international norm IEC 757. The abbreviations are listed in "Symbols."

Fig 2: Current Flow Circuit Diagram

Courtesy of FORD MOTOR CO.