Made my own bracket from a steel tie from home depot. Little bit of primer and rattle can flat black. Not the best picture6
http://i.imgur.com/KLRFEIc.jpg
Wired it myself. Just used the relay that came with the horns. Fused 12V from battery, signal from factory horn wire, and a ground for the relay. It's not super neat in a loom but it's not a rats nest either. There are guides on wiring them up.