FMTV Air Horn Install

I bought a new MRAP air horn to replace the wimpy horn. I've searched around and can't find a thread on this subject if there is please point it out. If not I'll post my install here.
While I'm waiting for delivery, does any one have some good advice on where I could get the air supply from? Preferably near the original horn location (passenger side behind the front bumper). Pictures always help.
Thanks guys!

I have been thinking about doing this as well. Subscribed!

I put a Whelen 100watt airhorn/pa in my 1078 and I have a Grover stuttertone airhorn I am going to connect with an air solenoid in my 1088. The horn is 24 volt in the truck.

This one from the MRAP already has the 24volt solenoid with the military connectors already on it. So I just need a good air source for it. Where did you get air from?

I didnt do the 1088 yet. I will go off one of the air tanks with a 80 or so psi protective valve.

There are two large air lines right by the horn. One should be full pressure?

Maybe. But dont mess with them. Just asking for trouble. Come off a tank right to an 80-85 psi pressure protection valve then to the solenoid and horn wherever you mount it.

I agree with suprman and going to get the air from a tank. I would hate to rob something else more important of air while blowing the horn. After taking a quick look under the FMTV I found that the air tank closest to the front has a threaded hole that is plugged and would be a good source.

Keith where did you get your horn? One of my only real complaints about the truck is the wimpy sounding horn.

If you are going air horn a Grover 1510 or copy of it will give you a very authoritive traffic clearing sound. I have them in my older 5 tons.

FleaBay! LOL!!!

I finished the horn Install. That has got to be one of my favorite upgrades yet. It brings a smile to my face every time I push the horn now. No more old VW Bug sounding horn.
It has a good tone to it, not Extremely Crazy loud but VERY loud.
Here are some pictures and a parts list. I know some people wont like the push connectors I choose but they are so much easier and if there is a problem I installed a valve that can turn it all off very easily.
Here are all the parts for it laid out. Obviously the hoses will be longer and I'm also installing an air chuck.

The parts are fro McMaster the horn is from flea bay.
I modified the existing horn mount by drilling one extra hole because the original hole spacing was to wide. Then I cut the old hole off to clean up the bracket.

Drilled a couple holes in the storage box and mounted it after it was all painted.

Here you can see the air line. Another great part is you don't have to do anything with the wiring except un plug the old horn and plug in the new one.

I removed the 1/2" pipe plug from the tank closest to the front for the air source.

After everything was installed I did pressure tested it and leak checked all the joints with soapy water. Everything passed.
Also You may notice I didn't put any kind of pressure regulator on it! Keeping it simple and from some good advice from another member, I decided not to.
Thanks for all the words of wisdom from the people that helped out.

thumbs up!!!

Little critique here, we are supposed to be using DOT rated pushlok fittings.

VIDEO?? I need to get rid of the VW horn as well.

NDT said:

Little critique here, we are supposed to be using DOT rated pushlok fittings.

Click to expand...

I agree, but got frustrated with trying to find a supplier of them the dot connectors. NAPA lists them by part number with no size specs. i kept running into dead ends.
So I went with what I found at Mcmaster.
Do you know where to find them without the wild goose chases?

Keith Knight said:

I agree, but got frustrated with trying to find a supplier of them the dot connectors. NAPA lists them by part number with no size specs. i kept running into dead ends.
So I went with what I found at Mcmaster.
Do you know where to find them without the wild goose chases?

Click to expand...

I have found them on ebay by searching "DOT push to connect" and at my local heavy duty parts house.

Thanks, I'm in a very rural with the closest truck supply, being 60 miles away so I was hoping for a single supplier with good descriptions that we could all go to with confidence and order them.

Installed the dust cover. Perfect fit nice and tight. Purchased from amazon.

Have the horn and went to tap into the air tank. The problem is I have no place free on my tanks.