Very detailed post on installing upgraded horns on 2010 Mazda3 with pics

[ntechnic]

Hi all,

Well, it was finally nice weather and the kids and I installed the two new horns. Wow, what a difference, you can really hear the horns now!

I have posted a nice install how to including nice big photos with circles and arrows here:

2010 Mazda3 Horn Upgrade How To Article

This is a very easy job. It took less than 45 minutes and cost less than $20. The article includes links to buy the horns from an online source.

PS - Mods, if this is in the wrong place, please move it as you see fit.

[glennk]

Wow! That was cool! A bit more to get to the horns, but definitely easier to assemble (without all of the swearing)!

[Derrick_B]

A much more involved way to install the horn upgrade, but probably easier overall. I know I spent a lot of time trying to get the 2nd horn on the bracket.

[MikeOfAllTrades]

I didn't take the front bumper off either, so it was quite a bitch blindly reaching in that little hole under the car to mount the bracket and connect the wires. This looks a bit more pleasant.

I'll be treating this tutorial as directions for removing the bumper in case I ever need to.

[glennk]

You know, someone should STICKY this post. Its good instruction for removing the front bumper.

[ntechnic]

A much more involved way to install the horn upgrade, but probably easier overall.

I think so. Besides the fact that I am a big guy with big hands, I'd rather spend 5-10 minutes to get a clear work area. You can't always do it, but it's nice when you can.

[JadeButterfly]

awesome writeup and pics ntechnic!

ntechnic - was there two other bolts that needs to be removed near the bottom center using a 10mm socket?

cuz I had to for mine... might be a safety thing for us up north.

in your 10th pic (first pic with the horn and 10mm writing), directly on top of the second hole on the middle flap, there is a metal clip. there is a rather long bolt that needs to be removed with a 10mm socket.. one on each side.

[ntechnic]

ntechnic - was there two other bolts that needs to be removed near the bottom center using a 10mm socket?

No, there wasn't. Just the nine hex head screws. Interesting, I wonder why and what purpose those two bolts serve on your car.

[jeventures]

I have had these airhorns (TwistedThrottle.com : Stebel Nautilus Compact Dual-Tone 12-Volt Motorcycle Air Horn, 139 dB, Black or Chrome - Stebel) on my motorcycles for a long time and they are by far louder than anything but an actual freight train. I'm trying to decide if I can get one on my Mazda without too much trouble. They draw a little under 18 Amps and need a relay circuit. Anybody know if I can just up the horn fuse in the Mazda from 15Amps to 20Amps and call it good or will I need to install a relay of some sort?

[StitcH]

Originally Posted by JadeButterfly

in your 10th pic (first pic with the horn and 10mm writing), directly on top of the second hole on the middle flap, there is a metal clip. there is a rather long bolt that needs to be removed with a 10mm socket.. one on each side.

You are talking about that clip circled in green, right? I noticed that too when I did my horns. I actually kind of broke the little plastic tabs on the fascia a little bit because I was not expecting them to be there :/

Apart from that small detail, the install went great

Stock horn:

YouTube - 2010 Mazda 3 Stock Horn

YouTube - 2010 Mazda 3 Stock Horn

New horns:

YouTube - 2010 Mazda 3 Aftermarket Horn

YouTube - 2010 Mazda 3 Aftermarket Horn

It sounds like a real horn now!!!