Anywho, there are video tutorials of how to replace the stock CRV horns located at
http://blog.diyhonda.com/search/label/CR-V
link to the specific horn replacement video tutorial page:
http://blog.diyhonda.com/2012/10/episode-241-2012-honda-cr-v-low-horn.html
Here is the installation instructions for the Stebel:
http://www.valkmotive.com/installation-nautilus-419-519-619-vm2-nm2-gp-418-404-415
The instructions call for wiring the horns using a relay to help provide enough juice to the compressor.
View attachment 68730
I decided to locate my relay on the backside of the front crossmember - I drilled and tapped an 8-32 hole.
View attachment 68738
The stock horn only has one wire going to it. The common (negative) is basically returned through the car's grounding bolts and the horn metal frame mount. The instructions call for using a similar grounding point for the relay (pin 85), which you can see I used the relay mounting bolt for.
Here is the wiring after tidying up everything. The yellow and black wires are the new power leads going from the relay towards the Stebel horn.
View attachment 68746
I originally started out by removing the horn mounting bracket and the horn itself as illustrated in the above tutorial video. Once that was out, I was able to remove the plastic retaining shield over that area - there are 3 clips you have to remove to be able to then wiggle it free. I then unbolted the OEM horn from the thin straight bridging metal bracket, and the thin metal bracket from the more hefty frame mounting bracket. I had to dremel out the frame bracket so that the thin bridging bracket could hang down in a more vertical orientation. I also had to drill out a slightly larger hole in the thin metal bridging bracket to accommodate the larger mounting bolt from the Stebel.
In the original comparison picture above, you can see that I attached the lower part of the mounting bracket already to the new Stebel horn (vertically).
Next after doing all the wiring, I had to fit everything back in to place.
here's a pic of how the new horn sits (looking from the back of the engine bay, looking forward and down).
You can see how the Stebel mounts to the (now vertically oriented) thin metal bridging bracket.
View attachment 68754
Of course, the most important thing is how it sounds, right?
Here is the stock horn:
and the Stebel:
sorry the clips are so short - it was around midnight when I finished up and I didn't want to wake the kids up



Also, I know it doesn't sound like the volume has changed, but in person, it is quite a bit louder.
The tone, as you can tell, has deepend overall. I'll try to take another longer video later on...
enjoy!
-Chris
edit2: better sound clip of the new horn. I dunno if it translates well to the video, but in person, the sound is much louder and the combination of the 2nd OEM horn and the new Stebel reminds me a bit of a train horn...
http://vid882.photobucket.com/albums/ac29/cannibal869/CRV/7BF980C2-C897-402E-A1F9-DACFBAA97092_zpsnpnkkxsg.mp4