The Stebel Magnum Blasters are great, loud horns. They have separate shells for the high and low notes. I've put them on 2 motorcycles and had them in my RX-8. It's best to power them directly from the battery via a relay on the stock horn power feeds. I'm not sure the stock wiring harness has the capacity to power them directly. Better safe than sorry.
Here's how I wired them on my ST1300
ST1300 Magnum Blaster Horns
Last edited by AdamK; 11-30-2015 at 01:40 AM.