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How to Install Horns on a Toyota Aygo

Model: Toyota Aygo Ab40, MK 2 - Years: 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023
Part: Checks and maintenance

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Video tutorial

In this video, see how to install horns on a Toyota Aygo: you can find them on Amazon with code B00IN0ZSZ6 for £17.49 per pair, with free delivery for Prime customers. Lift the vehicle slightly and locate the original horn, removing the protective plastic underneath to access it. Usually, the original horn has one wire; if it has two, identify the positive.

The horns take up more space than the original horn, so you will need to move to the opposite side of the vehicle, and an extension will be necessary. You will need a positive under fuses (15 A), and we added a red wire under the positive terminal, placing the fuse holder on the edge of the cover.

The horns are already mounted on brackets with the ground wires connected. Add the relay - which boosts the line - and the button wire, along with the red positive wires.

Check the positioning of the horns relative to the vehicle's body. Test if the relay clicks before connecting the fuse.

If everything is okay, proceed. See where our YouTuber routed all the wires during the installation.


Updated on 2 October 2026 by ScegliAuto


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Watch the video!


by ScegliAuto

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