Replace Stock With Aftermarket Horn

Time Needed: 30 mins.
Tools Needed: Phillips Head Screwdriver, Flathead Screwdriver (or prying tool), Socket Wrench, 10mm Socket, Replacement Horns
Prerequisites: Remove Front Bumper
Purpose: To replace the wimpy stock horn.

Full instructions after the jump.

Click on pictures to enlarge

The Stock Horn

Alright, I’m assuming you’ve removed your front bumper. If you look carefully on the driver side of the car beside the windshield washer fluid tank you’ll see the horn.

Closeup Of Horn

Here’s a closeup of where the horn is located. See it? It’s that black round speaker like thing between the radiator and the windshield washer fluid tank.

Held On By 10mm Bolt

You’ll find that the horn is fastend to the chassis via mount arm. It’s held on by a 10mm bolt, simply undo the bolt and you’ve got the horn in your hands.

FIAMM Freeway Blaster

Here’s the horn I decided to replace my stock one with. It’s a FIAMM Freeway Blaster Series Horn. Simulates a Big Rig Sound emitting a 132 decibel blast.

*NOTE* This is simply the horn I used, you can of course choose whatever horn you’d like, even air horns (although there’ll be a few more steps to do to get those working, eg. relay, compressor etc.), just make sure your horn sounds when it gets 12v power to it. Also remember to check the amperage draw of the horn, to make sure your fuse can take it.

Unbolted Horn

Alright you should have the OEM horn unbolted off the mount arm now. You’ll notice a wire harness plug that powers the horn which is grounded through the mount bracket itself.

Cut Off Harness

Unless you somehow managed to find a horn that would directly plug into the harness, you’ll have to cut the end off the OEM.

Attach Connector

Next for my particular horn, I crimped on a connecter to the end of the wire I just snipped. This will allow me to connect this to my FIAMM horn.

OEM Horn

Here’s the OEM horn. It Puts out a wimpy 110 decibels. Seeing that humans can only hear up to 120 dbs, it was meant to be safe and not deafen the guy who just cut you off. The FIAMM is rated at 132 decibels should do a great job of getting the other person’s attention.

New Horn Mounted

Here I have my aftermarket horn connected and mounted. It hooks up the same way as the stock horn. The wire I had connected a terminal to, provides the 12v to the horn. It is also grounded through the mounting bracket. Now you can put the bumper back on, I would recommend testing out the horn first prior to doing so.

*NOTE* you’ll notice that I used the mounting bracket from the aftermarket horn, you may find that your horn fits better with the OEM mount bracket.

Passenger Side Location

One wasn’t enough? Let’s go for two! Alright here on the passenger side you’ll notice there’s room for a second horn. Once again I purchased a second FIAMM Freeway Blaster Series Horn, this time the High Note instead of the Low Note.

*NOTE* You may find that both horns mount better backwards (for these particular horns) the pictures show how you would normally mount them.

High Note FIAMM Freeway Blaster Horn

Here’s the High Note horn mounted in the open space on the passenger side. This will be the side that provides the most room, especially if you intend on installing an air horn.

You’ll notice there is no windshield washer fluid tank on this side and there are already threaded holes for you to simply bolt a compressor for the air horn to. However you may also notice that you will have no room if you have a Cold Air Intake Installed.

Both Horns

Here is both horns mounted, High Note On the Passenger side, whilst the low note I have mounted on the right. You’ll notice that I had to wire the second horn under and across the radiator.

That’s it folks! Have Fun, and by the way…i’m running both horns on without the need of replacing the stock fuse.

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