The car circuit is a single line because the car body is metal, the conductor is the conductor, that is to say, only the negative pole of the fire line car battery is connected to the body. The professional said that it is directly grounded "grounding", other loads are also directly grounded, you said The water spray motor may be that you are looking for the wrong position. He is separated from the wiper appliance, and even if it is short-circuited across the bridge, the wiper motor switch is turned on and he moves.

Do you know how important the motor is to an electric car?

In fact, his role is as important as a car for a car, and as an electric-powered vehicle, almost all electronic control systems are core components, and some people have made an analogy of the components of electric vehicles. If the frame is the "skeleton" of the electric car, the "blood" of the battery electric car, the controller is the "brain" of the electric car, then the motor is the "heart" of the electric car, and his ability is directly related to the performance of the whole car. .