In order to prevent the connectors from being disengaged when the car is running, all connectors are equipped with locking devices. When removing the connectors, the lock should be pressed first, and then pulled away. Never use force when the lock is not pressed. Jerk on the wires to prevent pulling the latch or wires.
The circuit diagram is used to indicate the approximate location and wiring of the automotive electrical appliances, which is more intuitive. The disadvantage of the circuit diagram is that the lines are dense and criss-crossed, and the line search and circuit analysis are more complicated. Especially for cars with a lot of electrical equipment, it is more complicated to use a circuit diagram to represent the electrical system of the entire vehicle. Therefore, it is rare to use a circuit diagram to represent the electrical system of a modern automobile. It is common to use a circuit diagram to represent the entire vehicle electrical system or part of the circuit principle.
The wire harness is made of wires in the same direction. Binding multiple wires into a wire bundle can make the wires not messy, easy to install, and protect the wires. Due to the use of inter-wire connectors in modern cars, the design of wire harnesses is more self-intensive, and the number of wire harnesses is also larger. The use of these highly targeted and relatively small wiring harnesses brings convenience to the installation, maintenance and replacement of automotive circuits.