yes, it mounts on firewall, makes a lot of noise filling the tank, after using the air horns, and in my case,im in south florida with high Humidity, it gets water in the supply tank and when you blow the horn, the mosture goes into the selonid and locks it up about every 3 weeks. I went as far as putting an air drier on the unit, then I had to open hood every week and drain water from it,to much hassle for me......the wheelen air horn system w/PA, was the anser for me.......

Rick

H2 2004
H3 2006

 

Well that's pretty crappy. Glad I never pulled the trigger on that setup! Thanks for the info!