I'd like to replace the horn on my VR6.. Nothing musical or special, just one that doesn't sound like it was nicked off a scooter.

Another buddy of mine (also a Mk3 VR6) also wants to do this.
Am I correct in assuming I can just get a horn from virtually any car and wire it in? if so, it's going to be a fun few hours wandering around a scrappy with a battery trying out all the horns to find something that sounds a bit better

I guess all cars just have a horn that needs 12V, right?