just received my K3HA yesterday 
cant wait to get it installed and on the truck. you guys have any opinions on the Air Zenith compressors?
I have 2 OB2 Zeniths on my truck, I love them. Viair compressors are very good too. Keep the intakes away from any water and use the remote filter if you mount them under your truck. fill time is very fast with mine.
You will love the K3s Happy honkin Rex…
I like my pair enough that I bought 2 more…
thanks for the advice rex ,and for all the pictures in your install thread gives me some ideas for where to mount my horns-criag
Sure thing Craig, If I can be of any help let me know. I’ve done many installs.
Rex…
got them all hooked up running 5/8 airline and fittings and just a 5 gallon tank for now. man these things sound amazing…and the panic button is now a weapon against my coworkers
So it’s hooked up to you alarm also ??
^ Mine is too. I wired a 3 way switch threw my stock horn relay so I can switch from stock horn, no horn, or k5. Using the stock horn relay, I can chirp it with my remote and use the panic button.
Can you measure from the bottom of the manifold to the top of diaphragm? Nice looking K. I like the shiny manifold. Powder coat?
Sent while gathering Allison parts.
yep just have a wire tied in with my factory horn wire through a toggle switch in the cab, so it both horns or stock when the switch is on. then the k3s become part of the factory horn circuit so remote lock unlock chrip and the panic on the fob work with them.
thanks oxman they have a chrome powder-coat on the manifold and gloss black on the bells. ill have to crawl under the truck in the morning and get a measurement for you. is that all you need from the manifold to the top of the diaphragm housing?-craig
That’s the way I did mine.
it just felt like it would be easy and reliable and hold me over for phase two of the install that will include a bigger tank and a gw valve
Yep. Hopfully it’s under 12" cause that’s the room I have to play with. My K3H was suppose to be here already and I’m tring to install everthing besides the horn because I don’t know if it will fit in the spot I have picked out. If not I can put it somewhere else, but this spot wound be the best.
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My k3HA measures 9 3/4 inches from base to top of Diaphram
Awesome. Thanks!!! Thats from where you put air in on the mounting flange to the top of the diaphragm right?
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Yes it is. If you have A problem with height, try to find A K3LA manifold (Very short) or make A manifold.
No that should work perfect. Check out my build thread for updates. The horn SHOULD be here tomorrow, if so it will be on the truck tomorrow. Thanks again. I’ve been searching on the net all day and came up empty handed.
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When are we going to see a video?
I will get one up as soon as i can borrow a decent camera my phone is not the best for video. hopefully in the next day or so.