Review on Loud and Powerful: Vixen Horns Train Horn with 4 Air Horn Black 📢 Trumpets for 12v Vehicles - Perfect for Trucks, Cars, Semis, Pickups, Jeeps, RVs, SUVs (VXH4124B) by Jorge Maertz

You can't find a better deal anywhere on the web! A quick $70 for deafeningly loud horns? i can't win I installed them on my Peterbilt so I had my air system ready. FOR BEST RESULT: Discard the supplied solenoid coil. These things tend to get stuck and stuck wide open, and you definitely don't want that. I installed a mechanical manual valve next to the driver's seat so I can control how fast the air line opens and closes and to prevent accidental popping or sticking of the valve that stays open. They also feature a 1/4" air fitting that can be replaced with a 1/2" line for maximum airflow. (See attached image of a 1/4"-3/8"-1/2" adapter which I installed with a 90° push latch for easy removal if needed.) Road damage so the Sound bounces off the ground and spreads around you. My trailer is taller than most cars, so my horns are almost level with the windows of a typical car. (WARNING: Obey local noise laws and don't be Richard.)