Will I need anything else to install the kit if I want to run it to a separated horn button? or you're supposed to wire in to the stock button?

It really depends on what your putting the horn on, such as a car with an exiting relay etc. I put it on a toy 12 volt tractor that kids can ride on and all I did was go to the local automotive store and purchase a horn button. I also bought some wire and spade terminals which are cheap, and wired it up with just the parts that came with it except for the wire, terminals and horn button which totaled about $10.00 dollars. I did not use the relayand everything is working fine. By the way, they are loud!

Can the tone on this be adjusted? If yes, how?

By changing out the horns and increasing the air pressure. Which is not an option with these

This has problably been ask but do i need to use the relay if im going straight to tje stock horn wires

Yes, the amp draw of the compressor is probably more then the stock horn.

Is it possible to get spare mounting hardware? I need the plastic shim the horn mounting bolt goes through.

Have a picture? Worse case scenario you can probably just make one.

Hella Trumpet Horn Ca20 115db A Frequency Range 400hz High

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Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

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€ 137.75

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Sold byAmazon GreeceDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🚨 Command Attention with Every Blast!

UNMATCHED SONIC IMPACT - 115dB high-tone blast cuts through noise for ultimate road presence
ROBUST PNEUMATIC DESIGN - Electric-pneumatic mechanism ensures reliable, instant horn activation every time
PRECISION FREQUENCY RANGE - 400Hz tuned for maximum auditory penetration and safety alertness
SLEEK BLACK MACHINED HOUSING - Modern, durable finish that complements any vehicle front with style and resilience
PLUG PLAY POWER FLEXIBILITY - Operates seamlessly between 12V and 24V systems—perfect for diverse vehicle setups

The HELLA Trumpet Horn CA20 delivers a powerful 115dB high-tone sound within a 400Hz frequency range, powered by a versatile 12-24V electric-pneumatic system. Its sleek black machined housing ensures durability and style, making it an essential safety upgrade for any vehicle front.

Reviews

M**I

CAR OR TRUCK HORN

My husband loved the sound clip of this horn and misread thinking it would be great for our motorcycle because it came up under the search for motorcycle horn. IT IS NOT FOR A MOTORCYCLE. Way too big and is air actuated. For a car or truck this horn would be great. Sorry we had to return it.

13.05.2019

G**S

funktioniert gut

laut und gut, aber man sollte vorsichtig sein, wenn man es in der Nähe von Menschen benutzt, weil es sie wirklich erschreckt :)

23.04.2024

A**O

Muy buena calidad precio

Muy bien suena de 10 lo único que tuve que modificar el enganche de los cables y el del tubo por qué eran distintos al del camión un Iveco eurocargo

24.07.2025

I**I

Qualità prezzo ottimo

Ottima scelta

7.10.2026

J**A

Ottimo

Ottimo si sente fortissimo Montato su camion

9.02.2026

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