Usually, the connection methods of automobile wiring harness cables and connector terminals mainly include welding, crimping and mechanical connection. The welding method mainly adopts tin welding connection, which is suitable for the connection and assembly of automobile wiring harnesses with small batches and small cable cross-sectional areas; crimping method It is mainly used to apply external force to the corresponding specification of the die to combine the connector terminal with the cable contact surface. The connection is reliable and the service life is long. The connector terminal and the cable are tightly combined and fixed, the assembly is relatively complicated, and it is not suitable for mass production.