Ferrari horn install question - Alfa Romeo 4C Forums
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post #1 of 23 (permalink) Old 07-31-2018, 02:34 PM Thread Starter
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Ferrari horn install question

I want to upgrade the horn and saw this Ferrari horn kit from mrfiat.com for $108. The main question I have is, do I need to run a thick wire directly from the battery for the relay? I understand an air compressor might need like 20A.

Also, I found these two images on my hard drive (google image search can't find where I got them from) so apparently the horn is in front bumper area:



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post #2 of 23 (permalink) Old 07-31-2018, 04:08 PM
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I have installed a set of Dual, two tone electric horns. They are Hella's. Purchased from Griot's Garage for $49.99. Plenty Loud! They mounted in the Stock location, Under the Left Front head light. The Horns Included a "Y" wire. I just hooked up to the Stock wiring. Go to Go.
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post #3 of 23 (permalink) Old 07-31-2018, 09:31 PM Thread Starter
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Quote:
Originally Posted by Norton74 View Post
I have installed a set of Dual, two tone electric horns. They are Hella's. Purchased from Griot's Garage for $49.99. Plenty Loud! They mounted in the Stock location, Under the Left Front head light. The Horns Included a "Y" wire. I just hooked up to the Stock wiring. Go to Go.
Air horns uses compressors which draw a lot more current, like 20A. Since the stock 4C horn uses a 10A fuse, I may just skip the relay and upgrade the fuse to a 20A fuse. I just love the sound of the old Ferrari horns since I watched this video:


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post #4 of 23 (permalink) Old 08-01-2018, 07:19 AM
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The top picture is a Stebel Nautilus compact. Made in Italy. Use the same wiring harness with an adapter. Only need to upgrade the fuse to 15A.

Horn

https://m.ebay.com.au/itm/Stebel-Nau...-/121247579419

Wiring harness adapter

https://m.ebay.com.au/itm/2x-Speaker...anner=1&_rdt=1
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Last edited by Knievil; 08-01-2018 at 08:09 AM.
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post #5 of 23 (permalink) Old 08-01-2018, 06:07 PM
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Quote:
Originally Posted by Outrun View Post
I want to upgrade the horn and saw this Ferrari horn kit from mrfiat.com for $108. The main question I have is, do I need to run a thick wire directly from the battery for the relay? I understand an air compressor might need like 20A.

Also, I found these two images on my hard drive (google image search can't find where I got them from) so apparently the horn is in front bumper area:



The top two pictures are from my car, the horn works fine and I used the standard wiring.
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post #6 of 23 (permalink) Old 08-07-2018, 09:09 PM Thread Starter
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UPDATE: The Hella Compressor Horn Twin Tone 12 V 780/840Hz has been installed. Here are a few pics. The steps involved are:

1. Remove front driver wheel and tire.
2. Remove front inner wheel well liner, it's just a bunch of screws -- Philips, Torx T27(?) and 10mm bolts.
3. Unplug original horn and remove it, just one 10mm bolt.
4. Cut the stock wiring harness (black is negative, purple is positive) and add your wiring for the new compressor.
5. Find good places to mount the two new horns and the compressor keeping in mind you will have to route some air hoses and wiring.

The vintage Ferrari horns I got from eBay didn't work out so well (one didn't work and neither sounded very Ferrari-ish), but the bracket was perfect for these new horns. Basically, a $90 bracket. EDIT: Wanted to also mention that I'm glad this doesn't sound exactly like a Ferrari horn. It sounds very Italian and suits the 4C so much better than trying to copy that vintage Ferrari horn sound.

I'm pretty stoked about how it sounds and after being quoted over $400 to have it installed from a couple places, I'm glad I did it myself. This also forced me get my own floor jack finally (I feel like an actual adult now lol) I attached some pics with notes and here is what it sounds like.

Attached Images
File Type: jpg Image1.jpg (133.8 KB, 81 views)
File Type: jpg Image2-oldhorn.jpg (246.1 KB, 74 views)
File Type: jpg Image3-oldnexttonew.jpg (195.4 KB, 83 views)
File Type: jpg Image4.jpg (169.0 KB, 81 views)
File Type: jpg Image5-Installed.jpg (157.0 KB, 80 views)
File Type: jpg Image6.jpg (147.5 KB, 81 views)
File Type: jpg Image7.jpg (263.3 KB, 76 views)
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Last edited by Outrun; 08-07-2018 at 09:47 PM. Reason: Added one more point.
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post #7 of 23 (permalink) Old 03-02-2019, 05:49 PM
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Thinking of installing this:

https://www.ricambiamerica.com/horn-kit.html

But it’s a bit steep. I had a Stebel nautilus in my old Abarth. It was a pain. Needed to be wired directly to the battery.
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post #8 of 23 (permalink) Old 03-02-2019, 05:52 PM
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Quote:
Originally Posted by Knievil View Post
The top picture is a Stebel Nautilus compact. Made in Italy. Use the same wiring harness with an adapter. Only need to upgrade the fuse to 15A.

Horn

https://m.ebay.com.au/itm/Stebel-Nau...-/121247579419

Wiring harness adapter

https://m.ebay.com.au/itm/2x-Speaker...anner=1&_rdt=1
Did you install this? I had one in my old Abarth but it needed to be wired to the battery. How is this one installed in the 4c? Just to the horn wires?
Is the 15A fuse under the passenger kickplate?
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post #9 of 23 (permalink) Old 03-02-2019, 11:12 PM
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Ferrari horn install question

I only paid less than $30 for my two Italian horn system. I didnít have to change the fuses or anything and itís worked great for over two years. Iím sure it sounds the same as the $300 Ferrari one LOL
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Last edited by Call me Al; 03-02-2019 at 11:14 PM.
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post #10 of 23 (permalink) Old 03-03-2019, 08:13 AM
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Quote:
Originally Posted by Call me Al View Post
I only paid less than $30 for my two Italian horn system. I didn’t have to change the fuses or anything and it’s worked great for over two years. I’m sure it sounds the same as the $300 Ferrari one LOL
i bought the hella ones. I think they were $47. Now to try to install them...my brain thinks I’m handy but reality is something completely different.
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