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: 245940162

Details

Brand
HELLA
Colour
Black
Item dimensions L x W x H
16.9 x 15 x
Material
Plastic Steel
Voltage
12 Volts

🔊113 dB piercing sound

⚙️Universal 12V fit

🛠️Durable stainless steel alloy

R1433

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Description

🔔 Make your presence impossible to ignore with HELLA’s high-tone power horn!

BUILT TO LAST - Crafted from premium plastic and stainless steel alloy for unmatched durability.
PLUG PLAY UNIVERSAL FIT - Seamlessly install on any 12V passenger vehicle without hassle.
PRECISION GERMAN ENGINEERING - Experience reliability and acoustic clarity designed for pros.
TRUSTED LEGACY OF 100 YEARS - Backed by HELLA’s century-long expertise in automotive tech.
COMMAND ATTENTION WITH 113 D B - Cut through city noise with a horn that demands respect.

The HELLA 012588071 Black 92mm 12V Disc Horn delivers a powerful 113-decibel sound engineered for universal 12V passenger vehicle compatibility. Built with durable plastic and stainless steel alloy, it combines over 100 years of German precision automotive technology to ensure reliability, safety, and a commanding acoustic presence on the road.

Specifications

ASIN	B01EG18WX0
Automotive Fit Type	Universal Fit
Best Sellers Rank	205,306 in Automotive ( See Top 100 in Automotive ) 326 in Car Horns
Brand Name	HELLA
Colour	Black
Compatible with Vehicle Type	Passenger Car
Customer Reviews	4.3 4.3 out of 5 stars (152)
Fit Type	Universal Fit
Global Trade Identification Number	04082300618167
Included Components	Horn
Item Dimensions	16.9 x 15 x 6.1 centimetres
Item Type Name	Horn Kit
Item Weight	0.64 Pounds
Manufacturer	HELLA
Manufacturer Part Number	012588071
Manufacturer Warranty Description	Limited 1 Year
Material Type	Plastic Stainless Steel Alloy Steel
Model Number	012588071
Noise Level	113 Decibels
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	1.0 count
Voltage	12 Volts

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R1433

Duties & taxes included

In stock

Sold byAmazon South AfricaDelivered 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 South Africa.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Anjali K.

The product quality is outstanding. Exactly what I needed for my work.

1 month ago

Vikram D.

The MOLLE sheath is of exceptional quality. Very happy with my purchase.

2 weeks ago

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