So today, I didn't have work so i decide to be on my quest to find a new louder horn to replace the wimpy matrix horn!
So i went to my local junkyard and went on to look at horns from Tundras, to Siennas, to RX300s, and to the ES300. I chose the ES300 horns because they were already clean, or somewhat and they had both Hi and low. haha.
Here's all of the horns together:

Backside:

Part Number for high, low, and stock:



Moving On to the install:
First, you locate the horn: (I do not know what happened to the picture. LOL.)

Then you would unplug the connector to the horn:

Unscrew the bolt that holds the horn up:

Then screw the new horn into the same spot, and make sure it's on there tight, but not too tight:

Finally, reconnect and enjoy your new horn! HONK AWAY!
Stock Horn:
High Note:
Low Note and Current Horn:
http://www.youtube.com/watch?v=HG-1S4LQ28Q

















