I thought train horns ran off air. I had a friend who owned his own truck (big rig) and he installed a train air horn. Loud as hell! And, he said he could only 'honk' it so long before it made a serious dent in his onboard air brake system. So, what kind of train horn are you thinking about?

As an aside, I don't even know where exactly my horn button is! I know it's on the steering wheel, but . . . :frown2:

 

They do run off of air. But you have to be able to trigger (button or switch think the red button you see in movies for NOS.) them to have them blast. All in all I am will be using the OEM horn to run a relay to trigger the horns. The upfitter will just be toggle switch for turning the train horns on/off (think the prime button for NOS)

This is the kit that I am using. https://kleinn.com/product/onboard-...nboard-air-and-train-horn-system-for-2017-2018-ford-f-250-f-350-with-734-horns/

 

This is the kit that I am using. Onboard Air and Train Horn System For 2017-2020 Ford F-250 / F-350 With Model 730 Demon Train Horn — Kleinn Air Horns

How did your install go? I thought to use the same kit on my 2021, but Pete at Kleinn wrote me "It won't fit the 2021 F350 with the diesel intercooler, you will need the SDKIT17-734STL, the horns go in place of the spare tire on this one since they don't fit up front."

I'm hoping that Ford did not move the intercooler for 2020 and there is space, but did the kit work on your earlier truck?

 

On my 03 I ran a wire to the wire that fed my horn and used a tap. Then hooked it to a switch, and also hooked my air valve solenoid wire to it. Basically regular horn is on, then flip the switch air horn is on 😉. All you need to look up is where your horn is, mine was inside the fender on passenger side, not sure on yours.

 

Boy, that's quite the horn setup. And, looks like once you you get your air tank set up you can use that air for all sorts of other things. Cool. Good luck with it.

 

That's my plan. I like that one because it puts the horns in the front. I also plan on eventually putting air bags on and using the compressor for that also.

 

Check the laws in your state before you use the train horn in a public area. You may find it to be more trouble than it's worth.

 

Yeah I fully get it's by no means legal pretty much anywhere. But the compressor and tank should help me with airbags and everything.

 

Check out this video for your horn

Train horn installation

Sent from my iPhone using Tapatalk

 

I installed train horns on my F450, I learned that there is very little room under these trucks when you have the power running boards. I wanted to put my Union Pacific horns from my 14 F350 on my 19 F450, but there is NO room for the 6 gallon air tank and the horns. I ended up putting on this kit from hornblasters that uses the spare tire winch and raises up into its area.

 

I ended up putting on this kit from hornblasters that uses the spare tire winch and raises up into its area.

So what did you do with your spare tire? Carry it in the bed now?

 

I had to separate my horns from my rank and it all fit under and beneath my front bumper ranchhand, and I did wear mine to the actual horn and use an upfitter switch to toggle between my regular horn on my truck to my Kline airhorns I also ran to air chuck‘s the come out from underneath both sides the front doors for any air I may need for tires or in a ratchet or whatever. I like it a lot.

 

I pulled my spare for my tank

 

On my 2011, I put everything on the drivers side frame rail, but damn it was tight. Now I want to put power steps on, there has to be a better place for them. Room under the box? I don't want to get rid of my spare, I think thats just dumb.

 

Wow, I'm surprised you were able to get the K5LA on there, I didnt think there was anywhere near enough room

 

Barely fit.....

 

Not sure if anyone else has done it but I have a tool box in my bed so mounted them under it for the time being. I will eventually make a box and put them in the space in front of the rear tire. My compressor is in the toolbox as well but when I move the horns then I will make a box and move the compressor as well.

 

I did the same a @bigcaveman horns on frame under passenger side.