Last week I was able to get the local police maintenance center (my dad is a cop) to install my new train horns! They sound great. I’m no stranger to train horns, so I know they are not as loud as a Nathan or Leslie, but they are a contender. The total install time was about 6 hours. I have a Viair 400C compressor, 5 gallon tank, 1/2" air line and valve, and a 110-150psi pressure switch. This is the 540XL kit that I was able to piece together, with help from the great Hornblasters sales staff.
I think it’s great that you got your setup installed, but with government waste being a large concern, today, I disapprove of the use of taxpayer-funded equipment/location/tools/expertise to install something for personal use. (Also, imagine if the local electorate becomes aware that a law enforcement center (paid for by its tax dollars) installed something that is not legal on the road in many places.) ;(
Awesome! You’re going to have some interesting conversations with that setup. I can see it now…
HOOOONK!!
“Holy Smokes! Where did you get you get that from mate?”
“Cops installed it” (grin)
Legend!
Hahaha,thats funny. I paid the guy a fair amount so the tax payers wouldn’t have to…it was on his personal time. Except I guess the light bill will be paid by tax…oh well it’s all good 
Thanks for the install pics they look good.
It’s all about the horns!
hey btw would anybody be able to tell me why the compressor stops at about 140psi? I have a 110-150 switch but it always shuts off about 10-15psi before. At least that’s what the gauge is telling me.
just used that great search button…and found most say a pressure switch is not perfect…that’s fine!
Or the gauge is wrong. Or both are wrong and it’s just the delta between them.
I have a digital pressure gauge and mine stops 2psi short, too … and that gauge reads differently from the backup mechanical gauge I have under the hood. As a result, I just think of my gauges and the pressure switch as close approximations to the current PSI level. It’s not like this needs to be hyper accurate, so there is such a thing as ‘close enough’. 