Product Support

Will this horn fit my vehicle?

Before you order, check these three things. Every product page shows the voltage and what the horn needs.

Check	What to look for
1. Voltage	Most cars, SUVs, pickups and bikes run on 12V. Most trucks and buses run on 24V. Choose a horn marked for your system, or one marked 12V/24V. If you are not sure, check the label on your battery.
2. Air supply	Truck and bus air horns need compressed air. Vehicles with air brakes have an onboard compressor. Cars and bikes need an external compressor, or an electric horn with a built-in air pump (our MT range).
3. Space to mount	Measure the space where the trumpets will go, away from engine heat and moving parts. Compare it with the size on the product page.

Still unsure? Send us your vehicle make, model and year, its voltage and a photo of the space on WhatsApp, and we will suggest suitable horns.

Which type of horn do I need?

• Musical horns: multi-trumpet air horns with a controller that plays several melodies.
• Truck horns: loud air horns for trucks, buses and vehicles with an air supply.
• Train horns: deep, powerful train-style air horns.
• Controllers and modules: control boxes such as the M-620 and the Digital Module for 6-trumpet air horns.

Installation guidance

Correct installation keeps you, your vehicle and your horn safe. The key points are:

• Disconnect the battery before you start any wiring.
• Use a relay and a correctly rated fuse, the supplied cable and a good earth (ground).
• Mount the trumpets away from exhaust heat and moving parts, pointing forward or slightly down.
• On vehicles with air brakes, a qualified mechanic should connect the horn so braking air is never reduced.
• Follow the installation guide book supplied with your horn.

Read our full air horn installation guide for more detail. If you are not confident with vehicle wiring or air systems, please use a qualified auto electrician or mechanic.

Troubleshooting common problems

Disconnect the battery before you check any wiring. If a check below does not solve the problem, stop using the horn and contact us.

The horn makes no sound

• Check the fuse. Replace it with one of the same rating if it has blown.
• Check that the relay is connected correctly and clicks when you press the horn button.
• Check the earth (ground) connection. It must be on clean, bare metal or the battery negative.
• For air horns, check that there is air pressure and that the air pipe is connected and not kinked.

The sound is weak or uneven

• Check that the horn's voltage matches your vehicle (12V or 24V).
• Look for air leaks. Brush soapy water over the joints; bubbles mean a leak.
• Check for loose or corroded connections and a poor earth.

Only some trumpets play on my musical horn

• On ROMEO musical horns, play the test sound (position A). It sounds each trumpet for half a second. Six beeps mean all six trumpets are wired correctly.
• Fewer beeps point to a wiring problem on one trumpet. Check that trumpet's wire and plug.

The fuse keeps blowing

• Look for a bare wire touching metal, and check that the fuse rating matches the horn's instructions.
• Do not fit a bigger fuse to stop it blowing. This can overheat the wiring. Contact us or an auto electrician.

Get technical help

Message us on WhatsApp (+971-55-7373984) or email superairhorns@gmail.com. To help us answer quickly, please send:

1. Your order number, if you bought from us
2. The horn model (for example ROMEO 2.0, MSK-1300 or MT-3200)
3. Your vehicle make, model, year and voltage
4. A short description of the problem
5. Photos or a short video of the installation and, if possible, the sound

Warranty and returns

Our horns come with a warranty. Message us with your order number for the warranty details for your horn. Unused items in their original packaging can be returned within 30 days with a free return label. See our refund policy.

Safe and legal use

Horn laws are different in every country and emirate. Please check your local rules before you fit or use a loud or musical horn, and use it with care around other people.

Last updated: 7 November 2026