Where does blue and yellow hook too?

Your factory horn wires yellow is the hot wire

How do I wire in a separate push button? I can’t find information anywhere thanks.

If you're looking to bypass the existing horn & use it on push button only, this is what to do: Get rid of all the electric components. Wire through a fuse from positive + of battery to button +. Wire from - button to + of compressor of horn. Wire from - of compressor to negative - of battery or frame.

Could i install this under the hood of my truck or would it have to be put on the exterior?

Yes. I have a Nissan Hardbody and I have my under the hood. Just face the horn towards the front and your good.

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HK 12V 150db Car Air Horn, Super Loud Dual Trumpet Air Horn Kit with Compressor for Any 12V Vehicles Trucks Lorrys Trains Boats Cars Vans Kit (Black)

Product ID: 344304442

Details

Brand
HK
Colour
Black
Fit type
Universal Fit
Material
Zinc
Voltage
12 Volts

🔊150dB super-loud output

🔩Durable chrome-plated zinc alloy

⚙️Upgraded high-pressure compressor

44397CFA

Duties & taxes included

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Sold byAmazon SenegalDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🚨 Make your presence impossible to ignore with HK’s thunderous 150dB air horn!

UNIVERSAL 12 V COMPATIBILITY - Seamlessly fits cars, trucks, SUVs, boats, and more—one kit for all your vehicles.
WEATHER RESISTANT DURABILITY - Chrome-plated zinc trumpet and robust compressor built to withstand rain, sun, and rough conditions.
PRECISION ENGINEERED COMPRESSOR - High-quality copper coil and upgraded air pressure deliver crystal-clear, piercing alerts every time.
COMMAND ATTENTION WITH 150 D B POWER - Unmatched loudness ensures you're heard in any environment, boosting your road safety and presence.
HASSLE FREE INSTALLATION SUPPORT - Includes all mounting hardware plus a 30-day money-back guarantee and lifetime tech support for peace of mind.

The HK 12V 150dB Car Air Horn is a universal-fit, super loud dual trumpet kit featuring a high-pressure compressor and durable chrome-plated zinc alloy construction. Designed for any 12V vehicle including trucks, cars, boats, and trains, it delivers a powerful 150-decibel warning sound to enhance safety and command attention. The kit includes all necessary mounting hardware and offers a 30-day money-back guarantee plus lifetime technical support.

Specifications

ASIN	B07YXV69KV
Automotive Fit Type	Universal Fit
Best Sellers Rank	#27,889 in Automotive ( See Top 100 in Automotive ) #19 in Automotive Air Horns
Brand Name	HK
Color	Black
Compatible with Vehicle Type	Bus, Motorcycle, Passenger Car, SUV, Train, Truck, Van, Watercraft
Country of Publication	China
Customer Reviews	4.2 4.2 out of 5 stars (2,586)
Fit Type	Universal Fit
Included Components	1 X Air Horn, 1 X Compressor, 1 X Air Hose, 1 X Set of Mounting Hardware, 1 X Relay, 1 X Wired Relay Plug, 1 X Fuse, 1 X Inline Fuse Holder
Manufacturer	HK
Manufacturer Part Number	B07YXV69KV
Material Type	Zinc
Model Number	B07YXV69KV
Noise Level	150 Decibels
Number of Items	1
Number of Packs	1
Style Name	Safety
Unit Count	1 Count
Voltage	12 Volts

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