The working principle of wire harness:

The 1 wire harness

In order to facilitate the installation, repair, ensure the electric equipment can workin the most adverse conditions, the whole car all electrical equipment of different specifications, different colors of the wires through reasonable arrangement, whichare combined into a whole, and insulation wires bundled, such as complete, and reliable.

(1) the correct selection of wire section area

The cross-sectional area of electrical equipment on the car according to the size ofthe load current of the wire.

Electrical equipment to work for a long time can choose the actual carrying capacityof 60% wires; electrical equipment for less time available wire actual carrying capacity of 60%-100%. 

Electrical equipment to work for a long time can choose theactual carrying capacity of 60% wires; electrical equipment for less time availablewire actual carrying capacity of 60%-100%.

(2) the wire color choice

In order to facilitate the identification and repair, wire bundle of wires with differentcolors.

In order to facilitate the annotation in the circuit diagram, the wire colors arerepresented by the letter, the representative colors are in each line in the figure.