1. Connectors with double spring compression structure are preferred Use a sheath with a secondary locking to prevent the terminal from retreating; the sheath must be locked; the sheath must have a locking structure, which can be easily installed and disassembled. When the lock is installed in place, you can clearly feel and hear the sound. 2. Select the connector according to the cross section of the wire and the size of the overcurrent The currents that can be carried by connectors of different specifications are generally as follows: 1 series, about 10A; 2.2 or 3 series, about 20A; 4.8 series, about 30A; 6.3 series, about 45A; 7.8 or 9.5 series, about 60A. 3. For the sheath located in the wet area, choose a waterproof sheath Sealing is for waterproofing or preventing pollution. The location of the connector is in a harsh or humid environment. If water or corrosive liquid may enter, a sealing sheath should be selected. Harsh environments include the front cabin, wheel wells, chassis, doors, etc. Sealing sheaths must be used for places that are easily exposed during user use, such as cup holders, meters, etc. Where non-liquid contamination must be used a hermetic sheath, such as the sheath and terminals of the side airbags may or may be affected by the seat foam, rendering the gold-plated terminals meaningless. Airtight jackets should be chosen for places where the driver and passenger glue is placed, these areas will focus excessive moisture and salt. The above is the detailed introduction on how to choose the right car connector, I hope it can help you. For more quotations of automotive connectors, please visit the official website of Yueqing Xuyao Electric Co., Ltd.

4. The sheaths that are adjacent to each other on the same harness should be marked or colored to prevent mistakes. 5. Mixed parts are preferred for the butt sheath. In order to take into account the requirement that loops may be added in the future, in order to ensure that loops can be added in the future, the connectors must reserve holes. If you don't consider it, you may choose a larger sheath or add a pair of sheaths in the future, which will make installation and fixing difficult. When the wire harness end sheath is selected to be docked with the electrical appliance sheath, the wire harness end should choose the female sheath, and the electrical end should choose the male sheath. It should be that during the assembly process of the wire harness, if the wire harness end uses the male terminal, it is easy to cause the terminal to be bent or even damaged. In order to ensure the contact performance requirements of the wiring harness after the connector is connected, the selected sheath must have a structure that can install and fix the clip. 6.For airbags, ABS, ECU and other connectors with high performance requirements, gold-plated parts are preferred.