*** REVISION *** little more than a year they sound very sporadic and sound HURRY. Like they have a cold or something. I'll try taking them apart and see if the diaphragm needs cleaning and if that helps. Installed face down under the hood of my RAV4 but I think they still get water. They are a little taller than I would like. The air valve/switch for them leaks a bit under pressure so make sure you have a relay on your compressor so it doesn't drain your battery overnight just in case. One day I will replace it because I would prefer it not drain my tank. The airline that came with the horns, not for long. for everything. but it was cheap enough to get a 20 foot line. The horns are quite large so keep that in mind when purchasing as you will need space to mount them. The quality of the horns seems good, you might consider splitting them for a better fit. if you want to hide them I put mine in a RAV4 and they take up a lot of space under the grille.
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