Autozone SureBilt Horn

[aveti]

Hey guys. Just bought a SureBilt horn from autozone for my 74 Bronco, just wanted to know if its compatible or if its going to be complicated cause its not OEM.

 

[DirtDonk]

Hey there. Normally it’s no problem. Most horns typically use a straight 12 V signal just like the factory horn.
Do you have a picture, or a link to the exact torn?
And just to be sure, does your 74 have a horn relay under the hood? That’s typical of a 74, but that was the changeover year from no relay to a relay. So you never know…

 

[Madgyver]

nautilus horn by stebel and run a relay

 

[spap]

I have junk yard big bmw horns, nice and loud like 5 bucks

 

[DirtDonk]

Whatever you do, whether a single horn or dual, I recommend adding a relay.
Ford started using a relay on Bronco horns in 74. Takes all the load off of the horn button contacts in the steering column, and puts it on the relay.
The two benefits are, the contacts last longer, and you get a much louder horn!

 

[Soylent]

Whatever you do, whether a single horn or dual, I recommend adding a relay.
Ford started using a relay on Bronco horns in 74. Takes all the load off of the horn button contacts in the steering column, and puts it on the relay.
The two benefits are, the contacts last longer, and you get a much louder horn!

Glad I saw this. The horn in my 69 sounds quite weak and I have a 6 relay block that I am installing and don’t know what to do with all of them.

 

[DirtDonk]

Perfect! Good timing.
I used to “fix “my horn about every six months to a year, by removing the steering wheel and cleaning the contact points. They would carbon up pretty regularly in my case.
Not that I use my horn that often, but I never shy away from giving a quick toot as a form of communication, whether friendly or otherwise, so my contacts probably saw a lot of use that others don’t.
The relay cures all of that.

And you don’t need to get fancy. Use the existing 69 wiring to switch the relay. Don’t change the steering column to the ground like later models, just use the same 12 V path into the steering column and back out to the horn.
Just in this case, you will be splicing into the positive wire to the horn to trigger the relay.

 

[Steve83]

Hey guys. Just bought a SureBilt horn from autozone for my 74 Bronco, just wanted to know if its compatible or if its going to be complicated cause its not OEM.

Easy solution: return it for refund, and get a good horn from a good store or etailer. This was the OEM for most later Fords and several other makes:

https://www.amazon.com/dp/B07BG848B5/?tag=classicbroncos-20

But they're much cheaper in JYs, obviously. In any case, stay OUT of the zone.

...I have a 6 relay block that I am installing and don’t know what to do with all of them.

 

[Soylent]

Wow that schematic is great especially showing how to set up key-off, key-on, engine-on circuits.

 

[DirtDonk]

Steve83 set those up over a period of time, with his own knowledge and experience, with input from some members here, along with the factory and aftermarket diagrams. All modified, added to, adjusted, and tweaked by him.
It all came out pretty slick. We refer to them and the Seabiscuit Diagrams all the time!