Automobile wiring harness is the network main body of the automobile circuit, no wiring harness also does not have the automobile circuit. Harness refers to by copper punching and the contact terminal (connector) and wire and cable after crimping and outside plastic pressure insulator or additional metal shell etc., to harness tie formation circuit connected components. Wire harness industry chain, including wire and cable, connectors, processing equipment, wiring harness manufacturing and downstream applications industry, wiring harness is very wide, can be used in cars, household appliances, computers and communication equipment, all kinds of electronic instruments and meters, body wiring harness connection of the whole body, the general shape is H.