There's a reason that it's currently illegal for the citizens of New York City to lay on the horn for no damn reason whenever they feel like it. It's freakin' annoying when every cab driver in the city uses their horn instead of the turn signal lever to announce a lane change. That many horns blasting at once is pretty damn loud. Then again, the saying "If it's too loud then you're too old" is valid too. If you like to announce your presence with authority, then get yourself some train horns. Now you can have the same effect as a thousand angry cabbies in your own truck with Get Blasted's Kong four-trumpet horn kit.
What's In The Box?
The Kong four trumpet horn kit comes with a five-gallon reserve air tank, 3/8-inch Devious Customs solenoid valve, an Air-Zenith OB2 200-psi air compressor, a pressure switch and fittings to plumb the system.

1.Devious Customs installed...

1.Devious Customs installed this kit in the bed of a sport truck, using a large piece of aluminum diamond-tread material as a baseplate.

2a.After measuring the air...

2a.After measuring the air tank, compressor, and horn mounting flanges and marking their locations on the baseplate, holes were punched for the mounting hardware using this iron worker.

2b.The accessories were then...

2b.The accessories were then secured to the baseplate using Grade-5 hardware.

3.The polished horns look...

3.The polished horns look especially menacing. One looks says "I'm gonna blow your dome off!"

4.A stainless steel leader...

4.A stainless steel leader hose is included with the Air-Zenith compressor and is plumbed into the air tank via a T-fitting and also includes the pressure switch. The pressure switch is wired to a relay that will turn the compressor on and off at a pre-determined pressure level.

5.At the other end of the...

5.At the other end of the tank, a 3/8-inch electric solenoid valve is plumbed into the tank. When the dash-mounted switch is pressed, this valve will open via a 12-volt signal wire and send the compressed air from the tank to the horns.

6.This photo shows the 3/8-inch...

6.This photo shows the 3/8-inch air line that runs from the valve to the horn section. With the plumbing and mounting completed, the baseplate is bolted down to the bed floor of the truck.

7.The system wiring is pretty...

7.The system wiring is pretty straightforward. A 12-volt power wire runs from the battery to a fuseholder and onto the relay for the air compressor.

8.The dash-mounted switch...

8.The dash-mounted switch (arrow) is also wired to the battery and to the solenoid valve on the air tank. The rest of the wiring consists of a ground for the air compressor and relay at the rear of the truck.