1. Install horizontally, with the bell mouth below and 45° toward the front of the vehicle to prevent water from flowing directly into the bell mouth;
2. The angle of the bracket and connecting piece cannot be adjusted;
3. The installation torque of the horn bracket should be between (11Nm-18Nm) Within the range;
4. The speaker and its bracket should be installed on a sufficiently strong surface to avoid resonance between the speaker and the entire workshop;