Repair and Diagnosis: Description and Operation

The chassis electrical system is a 12-volt system with a negative ground polarity.
Wire size are appropriate to respective circuits, and classified by color. (The classification of harnesses by color is shown on the circuit diagram for ease of harness identification.)
The wire size is determined by load capacity and the length of wire required.
The vehicle harness are: body harness, chassis harness, engine room harness, instrument harness, transmission harness, engine ECGI harness, dome light harness, door harness, rear body harness, tailgate harness, SRS harness and battery cables.