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Discussion starter · #21 ·
Will just be wiring and routing, but if that’s the case it’d be excellent.
Sadly this gives no current draw and not much idea of size, but I think you can get them at an OK price from Ford:

(They say Fiamm, which also sells aftermarket horns. Not sure if they are any different but the Ford one does have a slick two-horn bracket that many aftermarket horns won't.)
 
Stuck in the Stebel Nautilus horn today, a silly early mod but it's what USPS brought me.
The horn is a dual horn air horn, packaged as one unit with the compressor. These seem to be popular with touring motorcycles, where a loud horn is a little more life or death than my annoyance at having a beeper.
Anyway, I made a bracket to hold it behind a blank part of the grille out of the air flow, below the airbox snorkel. It needed a bit of a tilt to stay below the duct, but bolts up to the existing hole. This horn draws 16 amps or so, so I needed a relay, which meant I needed a relay mount, and a fuse box to power it, and a bracket for the fusebox, so yeah project creep, but I will need the mount and fuse box for other mods in the future anyway.

Relay mount is just a drilled and tapped bar that fits behind the headlight, because there's not much in the way of mounting spots in that corner of the bay.
The fuse block is on a bent metal saddle bracket attached to the lower bolts of the factory fusebox, nice and close to the battery jump start terminal, keeping the unfused wire short and out of the way. The red plastic terminal cover will slide up and off the battery terminal if you release the tabs at each corner.
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That
I've installed the dual PIAA horns and they're pretty loud. The GR Corolla only has one hole to mount the horns so I mounted both of them together.


PIAA horns on - Amazon.com
You'll also need the harness too - Amazon.com
That seems like plenty!
 
Discussion starter · #25 ·
I've installed the dual PIAA horns and they're pretty loud. The GR Corolla only has one hole to mount the horns so I mounted both of them together.


PIAA horns on - Amazon.com
You'll also need the harness too - https://a.co/d/4iO8miB
That sounds great; thanks for the video and links!

Any pictures of how you did the mounting? (Though it probably won't be too hard to figure it out.)
 
Discussion starter · #28 ·
Discussion starter · #29 ·
This video (skip to near the end if you just want sound) tries 4 options from PIAA. I'm still thinking Super Bass. The regular Sports Horn is OK too. The high-tone "Sports Horn" (in the different-looking packaging) sounds a bit silly.

@DocRoc24 I think this answers how it sounds, though the video shared by Riq here did give a better idea of volume with the echo.
 
This video (skip to near the end if you just want sound) tries 4 options from PIAA. I'm still thinking Super Bass. The regular Sports Horn is OK too. The high-tone "Sports Horn" (in the different-looking packaging) sounds a bit silly.

@DocRoc24 I think this answers how it sounds, though the video shared by Riq here did give a better idea of volume with the echo.
Here you go. Keep in mind its in parking garage but its loud in the streets too.

 
Here you go. It's pretty straightforward when you get to it. There is another hole on the opposite far end if you want to mount them separately. You'll probably need longer wires and perhaps another bracket mount and bolt, if you do decide to mount them separately.
Got to hear this today on @SprayNPray ’s GRC. Now that’s a horn. He went over the install briefly too. That’s a must mod.
 
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