Will hella 002768821 24v horns to a dc36v/48v battery using a dc24v20a 480w step down transformer be the correct amps and watts for these horns?

Transformers only work with AC not DC. You could use a voltage regulator or a series resistor to reduce the applied voltage to 24V. Or, with 48 volts DC you could just wire them in series so that they each get only 24 volts. The current (amps) will take care of itself (I=V/R), about 5 Amps, I'm told.

Will this fit a 2016 subaru legacy? please only yes or no. no shoulds.

This isn't a yes/no question. It'll fit any car so long as you can find a proper place on the frame to mount them. Mine came with only one high-tone horn. I had to find a place to mount the second. Look at videos of others doing it. You may need to drill, and you'll need to run one wire only as the negative runs through the frame.

why are there two ? can i just install one?

Some vehicles are outfitted with two of these, like my SUV. Yes, you could install just one, but I find myself wondering why you don't just by a single horn?

Hella 002768821 Black 92mm 24v Disc Horn Kit Universal Fit

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$165.03

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Description

🔔 Make your presence impossible to ignore with HELLA’s piercing power!

BUILT TO ENDURE - Crafted with premium metal and stainless steel alloys, designed for long-lasting durability and German-engineered reliability.
DUAL TONE PRECISION - High tone at 435 Hz and low tone at 335 Hz create a distinctive, attention-grabbing sound signature.
SEAMLESS UNIVERSAL FIT - M8 screw bracket and flat 6.3 mm blade connectors guarantee hassle-free installation on virtually any vehicle.
POWER PACKED PERFORMANCE - Robust 24V voltage delivers consistent, high-impact acoustic warnings for ultimate safety.
COMMAND ATTENTION INSTANTLY - 113 dB sound level cuts through any noise, ensuring you're heard loud and clear in critical moments.

The HELLA 002768821 Black 92mm 24V Disc Horn Kit is a universal-fit, dual-tone automotive horn delivering a powerful 113 dB sound at 24 volts. Engineered with durable metal and stainless steel alloys, it features an M8 screw bracket and flat blade connectors for easy installation. Trusted for over a century, HELLA’s precision German technology ensures superior acoustic performance and reliability for passenger cars, making it an essential safety upgrade.

Specifications

ASIN	B01EG18E1U
Automotive Fit Type	Universal Fit
Brand	HELLA
Brand Name	HELLA
Compatible with Vehicle Type	Passenger Car
Country of Origin	USA
Customer Reviews	4.5 out of 5 stars 115 Reviews
Fit Type	Universal Fit
Global Trade Identification Number	04082300558906
Item Weight	0.49 Kilograms
Manufacturer	HELLA
Manufacturer Part Number	002768821
Material	metal Plastic Stainless Steel Alloy Steel
Material Type	metal Plastic Stainless Steel Alloy Steel
Model	002768821
Noise Level	113 Decibels
OEM Equivalent Part Number	002 768-821, 3AM 002 768-821, 56370045, A100-323, S92 SET
Part Interchange Info	002768821
Style	Safety
Style Name	Safety
Unit Count	1.0 Count
Vehicle Service Type	Passenger Car
Voltage	24 Volts

Reviews

L**R

Super

Funktioniert

10.08.2025

G**.

Q Vraiment Bon

Efficace

31.12.2024

E**O

Loud work great but they shoul mark which is the hi and low horn

Loud work great but they should mark which is the hi and low horn

28.03.2023

C**S

The 24volt wheel loader now goes beep beep

Worked in a 24v system as advertised. The wheel loader now goes beep beep, problem solved…. On to the next problem

11.06.2022

R**N

Nice

Loud perfect

3.10.2024

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