Hi folks! Today installed BB horn and want to share some ideas. Prior to installation bought 3 meters of wire, electric tape, cable protector hose, generic waterproof connectors, 5 pin automotive relay

Here is scheme:

All wires collected under seat. There is plenty of space for relay and wires
There is 2 switched outlets under seat. I have connected to small one

Then cutted OE horn connector, added generic connector to wire and ran cable through cable trank under fuel tank. Did the same for horn itself.

Ran cables from battery and relay to Buffalobrand horn under fuel tank.

Here is how looks

After all wires connected to relay as per scheme and voila! It works!!!

So now, when I switch on alarm, only OE horn beeps and works. If motorcycle is switched on or started, them only Buffalo horn works. If someone want, switch could be added to "+12 switched", then you could choose which horn to use.

If anyone have any questions, I'm ready to help

P.S. BB horn quality is really outstanding, truly bulletproof construction