Most of the electrical comfort and convenience features, which are available in automobiles today, were not around ten years ago. The technology used in producing electrical components for automobiles has become more advanced these days. Currently, this industry commands a volume of US $19 billions. Modern automobile uses different types of electrical wires and components for producing, storing and distributing electrical current to other parts of the vehicle. The key functions of electrical wiring and components are: starting the engine; providing electrical energy for operating lights; and also for running air conditioners, heaters, music systems and other devices. A variety of customized electrical components available in the market include electrical fuse, switches, fuse holders, wiring connectors, switch panels, wiring harnesses and relay connectors. These components can be bought from various regions including Dallas, Shenzhen, Cairo, Ontario, California, Georgia, Taipei, Zhejiang, Pennsylvania, Taichung, and Florida. The leading manufacturing companies of electrical wiring and components in the global market are Delphi, AFL Automotive, Sumitomo Wiring Systems, Valeo, INTEDIS, Lear, Yazaki, and Leoni.