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 012588071 Black 92mm 12V Disc Horn (Ht Universal Fit-Single Blister Pack)

Product ID: 27675767

Details

Brand
Hella
Color
Black
Item dimensions L x W x H
6.65 x 5.91 x
Material
Alloy Steel
Voltage
12 volts

🔊113 dB piercing sound

🔋12V power compatibility

⚙️M8 screw bracket fit

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Description

🔊 Be heard, be safe, be unstoppable.

SAFETY YOU CAN HEAR - Transform your ride’s presence with a horn designed to keep you visible and protected in traffic chaos.
DURABILITY MEETS STYLE - Robust alloy steel and sleek black finish built to withstand the urban grind and look sharp doing it.
EFFORTLESS UNIVERSAL FIT - M8 screw bracket and blade terminals ensure quick, hassle-free installation on most vehicles.
UNMATCHED ACOUSTIC POWER - Cut through city noise with a commanding 113 dB blast that demands attention.
PRECISION GERMAN ENGINEERING - Crafted with over 100 years of automotive tech expertise for ultimate reliability.

The HELLA 012588071 Black 92mm 12V Disc Horn delivers a powerful 113 dB sound output engineered with German precision. Featuring a universal M8 screw bracket and blade-type terminals, it offers easy installation and reliable performance. Built from durable alloy steel and plastic, this horn is designed to enhance vehicle safety by ensuring your presence is unmistakably noticed in any traffic environment.

Specifications

ASIN	B01EG18WX0
Automotive Fit Type	Vehicle Specific Fit
Best Sellers Rank	#73,376 in Automotive ( See Top 100 in Automotive ) #155 in Horns & Accessories
Brand Name	Hella
Color	Black
Compatible with Vehicle Type	Passenger Car
Customer Reviews	4.3 4.3 out of 5 stars (158)
Fit Type	Vehicle Specific Fit
Global Trade Identification Number	04082300618167
Included Components	Horn
Item Dimensions	6.65 x 5.91 x 2.4 inches
Item Type Name	Horn Kit
Item Weight	10.24 ounces
Manufacturer	HELLA
Manufacturer Part Number	012588071
Manufacturer Warranty Description	Limited 1 Year
Material Type	Alloy Steel, Plastic, Stainless Steel
Model Number	012588071
Noise Level	113 db
Number of Items	1
Number of Packs	1
OEM Equivalent Part Number	012 588-071, 012588071, 3AL 012 588-071, S92
Style Name	High Tone / 12 V
Unit Count	1 Count
Voltage	12 volts

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TrustScore 4.5 | 7,300+ reviews

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S$57

Duties & taxes included

In stock

Sold byAmazon SINGAPOREDelivered 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 SINGAPORE.

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Join PRO →

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TrustScore 4.5 | 7,300+ reviews

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Excellent communication throughout the order process. Product is perfect.

2 weeks ago

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