All was easy enough. Finding the appropriate switch was the most difficult. This is the switch I finally found that suited me perfectly. http://parts.digikey.com/1/parts/970...rn91-25bb.html
I like it because it mounts perfectly where the OBD2 port was. I have no need for the OBD2 since it is plugged into my Scangauge2. http://www.scangauge.com/products/scangaugeii/
The kit is from Hornblasters. The horns are the Shocker 4XL train horns.http://www.hornblasters.com/products...r-4-train-horn
Also from Hornblasters is the Viair 20005 compressor/air tank combo. http://www.viaircorp.com/OnRoad/20005.html
All plumbing, fittings ect are included. There is no wiring with the combo I chose.
These photos were taken before all of the hoses were run.
They are loud and obnoxious. Some people ask why did I get train horns for my car. I can't answer their question, but when I demonstrate them, they love it and want some too.