GG Grand General 69991 Chrome Triple-Brass Train Horn 12/24V — 140+dB Heavy-Duty Mount

GG Grand General 69991 is a heavy-duty triple-brass train horn assembly with a show-quality chrome finish built to deliver a powerful, authentic train horn tone for 12V or 24V systems.

The 69991 combines three chromed brass trumpets, a multi-voltage electric solenoid valve, and a heavy-duty stainless steel mounting bracket to reproduce the distinctive, full-bodied sound of a classic train horn. Built for durability, each trumpet is finished in chrome and engineered to operate across a wide pressure range so it works with most vehicle air systems. Installation requires an air tank and 1/4" inner-diameter hose (not included), and optional hardware and valve accessories are available separately for different mounting preferences.

How loud is this horn and what sound should I expect?

The 69991 produces a high-intensity, train-style blast that measures above 140 decibels under optimal conditions. Expect a multi-tone, resonant tone from the three brass trumpets that cuts through ambient noise and carries over long distances. Because it’s made from chromed brass, the timbre is bright and clear rather than muted.

• Rated sound level: 140+ dB under typical operating pressures
• Three-trumpet configuration offers layered, authentic train harmonics
• Chromed brass trumpets for pronounced, clear tonal character

What electrical and air system requirements do I need?

This horn is compatible with both 12V and 24V vehicle electrical systems and uses a multi-voltage electric solenoid valve. For safe, reliable operation you must supply an air tank and a 1/4" inner-diameter hose between the tank and horn; these are not included. The horn operates across pressures from about 70 PSI up to and beyond 140 PSI.

• Voltage: 12V / 24V multi-voltage solenoid valve included
• Required: separate air tank and 1/4" inner-diameter hose (not included)
• Operating pressure range: ~70 PSI to 140+ PSI for full performance

How is the horn mounted and what accessories can I add?

The package includes a heavy-duty stainless-steel "L" mounting bracket for secure attachment to many vehicles and platforms. If you prefer different mounting options, Grand General offers floor-mount stands and valve lever sets in 4", 7", and 11" sizes, plus a heavy-duty electric solenoid valve sold separately. Choose accessories based on available space and desired control style.

• Included: heavy-duty stainless-steel "L" bracket for sturdy mounting
• Optional floor-mount stands and lever sets: GG 69977 (4"), GG 69979 (7"), GG 69982 (11")
• Optional solenoid valve: GG 69993 for alternate control setups

What materials and build details affect durability?

The trumpets are crafted from brass and finished in a triple chrome plating for corrosion resistance, visual appeal, and long-term tone stability. Mounting hardware uses stainless steel to resist rust and vibration fatigue, making the assembly suited to exposed or mobile installations. Proper installation with a compatible air tank and hose will maximize service life.

• Chromed brass trumpets for corrosion resistance and crisp sound
• Stainless steel mounting bracket for strength and rust protection
• Engineered for vehicle and outdoor use when paired with recommended accessories

Who is this horn for? The GG Grand General 69991 is aimed at vehicle owners, off-road enthusiasts, truck operators, and specialty-vehicle builders who want an authentic train-style horn with strong projection and a show-quality chrome appearance. It’s also a fit for installers who already maintain an air system and need a powerful, durable horn assembly they can mount securely and customize with optional accessories. Note: this product requires an air tank and hose for operation and should be installed with attention to local sound regulations and safety.