Where is the back door horn line of BYD Song (how to disassemble the front door horn of BYD Song)

There is no reserved cable for BYD's back door speaker. Just add a power amplifier and unplug the cable directly. If not, connect it from the inner pedal to the central control, and the central control has no reserved rear door horn interface.

Horn is the sound signal device of automobile. In the process of driving, drivers send out necessary audio signals according to needs and regulations to warn pedestrians, attract the attention of other vehicles, ensure traffic safety, and at the same time, it is also used to prompt and transmit signals.

The electric horn of a car emits sound through the vibration of a metal diaphragm. Automobile electric horn consists of iron core, electromagnetic coil, contact, armature and diaphragm. When the driver presses the horn switch, the current flows through the coil through the contact, and the coil generates magnetic force to attract the armature and force the diaphragm to move. When the armature moves, the contact is disconnected, the current is interrupted, the magnetic force of the coil disappears, the diaphragm returns to its original position with the armature under the action of its own elastic force and spring leaf, the contact closed circuit is reconnected, and the current flows through the coil through the contact to generate magnetic force, and the above actions are repeated.

In this way, the diaphragm vibrates repeatedly, thereby emitting sound. * * * The rigid connection between the vibrating plate and the diaphragm can make the vibration more stable and the sound more pleasant (i.e. electromagnetic principle).

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