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?

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Hella 002768821 Black 92mm 24V Disc Horn Kit (Universal Fit)

Product ID: 288546630

Details

Brand
HELLA
Colour
Black
Fit type
Universal Fit
Material
Metal
Voltage
24 Volts

⚡24V high voltage power

🔊113 dB sound level

🔩Universal M8 screw fit

53269CFA

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Description

🚗🔊 Make your presence impossible to ignore with Hella’s powerful disc horn kit!

SAFETY MEETS STYLE - Sleek black 92mm disc design that’s as bold as your drive
READY FOR CRITICAL MOMENTS - Engineered for maximum reliability when every second counts
UNIVERSAL FIT ZERO HASSLE - M8 screw bracket and flat 6.3 mm blade connectors for seamless installation on any 24V vehicle
COMMAND ATTENTION INSTANTLY - Dual-tone horns (435 Hz & 335 Hz) cut through noise with 113 dB power
TRUSTED LEGACY PROVEN QUALITY - HELLA’s century-long expertise ensures OEM-grade durability and performance

The Hella 002768821 Black 92mm 24V Disc Horn Kit delivers a piercing 113 dB dual-tone sound (435 Hz high, 335 Hz low) designed for universal fit on 24V passenger vehicles. Featuring a robust M8 screw bracket and flat blade connectors, this OEM-quality horn set combines durability, easy installation, and a sleek black finish, backed by over 100 years of automotive innovation from Hella.

Specifications

ASIN	B01EG18E1U
Automotive Fit Type	Universal Fit
Best Sellers Rank	#1,154 in Automotive ( See Top 100 in Automotive ) #1 in Automotive Horns
Brand Name	HELLA
Color	Black
Compatible with Vehicle Type	Passenger Car
Country of Publication	China
Customer Reviews	4.4 4.4 out of 5 stars (118)
Fit Type	Universal Fit
Global Trade Identification Number	04082300558906
Included Components	Horn
Item Highlight	Frequency range: 335/435Hz - tweeter/low - electric - ECE - housing colour: black - quantity: 2
Item Type Name	002768821
Item Weight	0.49 Kilograms
Manufacturer	HELLA
Manufacturer Part Number	3AM 002 768-821
Manufacturer Warranty Description	Limited 1 Year
Material Type	Metal
Model Number	002768821
Noise Level	113 Decibels
Number of Items	2
OEM Equivalent Part Number	A100-323-TERBERG-BENSCHOP
Part Interchange Info	002768821
Style Name	High & Low Tone / 24 V
Unit Count	2 Count
Voltage	24 Volts

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53269CFA

Duties & taxes included

In stock

Sold byAmazon SenegalDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Senegal.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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