Mechanical Problems
^ Horn Tone Poor - Tighten bolts in mounting area, or correct poor connections in ground.^ Low-Pitched Moan - Sounds like "mooing." Current is too high. Replace the horn.
^ Weak Tone - Current is too low. Correct poor connections or ground.
^ Weak, Strained Tone - Remove any foreign object in horn.
^ Harsh Vibration - Rend bracket so horn is not touching sheet metal.