FARBIN Dual Trumpet Air Horn 12V Train Horn Kit — 2 Compressors, 178dB Long-Range

This kit pairs two extended trumpet tubes with rugged, upgraded compressors and a reinforced wiring harness to produce a long-reaching, sustained tone intended for heavy-duty vehicles. Built for harsh conditions and simple DIY fitting, the set includes brackets, relay, nuts and full wiring so you can add a commanding horn to trucks, vans, jeeps, boats and other 12V systems.

How loud and far does the horn project?

The dual trumpet design and extended pipes create a sharp, persistent sound measured at about 178dB at the source, making it noticeable over road and marine noise. The longer trumpet lengths (370mm and 410mm) help the tone carry farther and remain audible in noisy traffic situations.

• 178dB peak output at the horn for maximum noticeability.
• Two different-length trumpets (370mm and 410mm) for sustained projection.
• Designed to cut through heavy traffic and ambient noise.

What components and hardware are included for installation?

The kit comes with the trumpets mounted on a bracket, two integrated air compressors, a relay, a thickened wire harness, mounting nuts and an instruction sheet. Everything needed for a typical 12V vehicle install is supplied so most owners can mount and wire the horn without professional help.

• Dual compressors with protective housings and mounting brackets.
• Pre-assembled horn trumpets and mounting bracket for quick placement.
• Relay, reinforced wiring harness, fuse and installation instructions included.

How durable is the system for extreme weather and heavy use?

The compressors feature thickened red-copper coils and are rated to operate from -30°C to 80°C, giving resilience in very cold or hot climates. The wiring harness uses enlarged copper conductors and an upgraded fuse threshold to reduce voltage loss and improve circuit safety under load.

• Compressors with thick copper coils for reliable performance in -30°C to 80°C.
• Reinforced wire harness and higher-capacity fuse for safer power handling.
• Corrosion-resistant fittings and sturdy bracket for long-term outdoor use.

Is the horn compatible with my vehicle and how easy is installation?

The FARBIN horn is designed for any standard 12V electrical system, making it suitable for trucks, pickups, SUVs, commercial vehicles, boats and many off-road rigs. With the included relay, harness and bracket, a typical DIY installation can be completed in roughly ten minutes by someone comfortable with basic wiring and hand tools.

• Works with any 12V vehicle system: trucks, buses, boats and cars.
• Complete hardware and wiring supplied for a one-person install.
• Simple mounting points and step-by-step instructions reduce installation time.

Who is this for: The FARBIN Dual Trumpet Air Horn is aimed at drivers and vessel owners who need a highly audible, durable signaling horn—fleet operators, tow and utility vehicles, recreational boaters and off-road enthusiasts—who want reliable, weather-resistant performance and a kit that’s straightforward to install without specialized tools. Note: check local noise and road-safety regulations before fitting or using a high-decibel horn.