That's how I have mine set up on my '06 too. One of the horns was missing on my '97 Outback and the wimpy Vibe horn plugged right in. Denso must make horns for Subaru also.
My Bad - FIAMM brand ..... tossed the packaging, and going from memory..... Anyways - louder than stock, and sounds like a real car. Not a unique euro tone, or Mack truck tone - though the latter would be nice.Price was right.Got 'Em at Cdn Tire - $35 Cdn for the kit.http://www.canadiantire.ca/bro...=true
I'll be installing these bad-lads on both the Subie and the Vibe here soon... FIAAM BTW and about 30$ shipped from amazon.. Had them on the old Subie and on my old VW, they kick much (removed)... a bit more of a paint to install though...