Four components of the basic electrical connector mainly include: housing, pins and sockets, socket retainers and seals：

1. Electrical connector shell: The electrical connector shell can protect the internal structure of the connector and prevent the external environment from contacting the bare wire ends, thereby resisting the harm caused by harsh environments to the product. The housing itself has holes and openings to accommodate wires and pins. Also, the inside of the case is designed to hold everything in place by locking the pins and holding the seals together.

2. Electrical connector pins and sockets: The pins and sockets are connected to each other and conduct electricity through the connector. The fit must be comfortable enough to ensure a secure connection, but loose enough so that disconnecting them isn't too difficult. Depending on the specific type of connector, the number of pins and sockets will vary.

3. Electrical connector socket holder: The main function of the socket holder is to prevent the pins and sockets from loosening. To do this, the plastic receptacle bracket presses up on the plastic latch that holds the pins and receptacle in place, acting as a secondary locking mechanism, and the receptacle bracket connects to the connector from the front.

4. Electrical connector sealing: To prevent water from entering the connector, a rubber sealing ring is placed at each end. The wires enter the connector through the seal, which effectively uses the pressure to keep out moisture and moisture.