So does it sound different if it's hooked up using a relay? I don't have a relay to mine... i just used the factory wires and it works fine.

 

It should be louder with a relay.

 

The relay gives the most power. The relay comes with your Wolo horns.

 

I think the Stebel Compact Truck horn sounds a lot better/deeper and is only a little bit bigger in size. Goes for about $75.

http://www.stebel-usa.com/product/32...ct_Truck_Horn/

 

Wolo has train horns if you need more horn. The air pump is just to much for my bike.

 

When I was at the Lonestar Rally this past weekend I ordered a Wolo 519 horn from Kuryakyn.
The horn was pretty dang loud. I liked it.

They had sold out of them at the Rally.
Suppose to be here in a couple days.