Kleinn Air Horns Train Horn Kit for 2017-2021 F-250 and F-350/2017-2019 F-450

I installed this on a 2019 F-350 CCSB 6.7L diesel with 18” wheels and stock suspension/height. I also used factory upfitter switches for the wiring. Therefore, I did two relays for two switches: one to toggle between factory & Kleinn horns and the other to toggle power on/off to the compressor.The kit is probably the most comprehensive kit for any automotive accessory that I’ve ever installed. All brackets, hardware, and fittings that you could ever need. I had tons of extra wiring, tubing, fittings, electrical connectors, wire/tube covering, and hardware left over. I was very impressed with the comprehensiveness of all of the accessories. The only thing I did was to swap out the supplied 12 gauge CCA wire with 10 gauge OFC wire for wiring the ~20 foot run to the compressor. I also installed my compressor relay in the rear next to the compressor using a waterproof 40A relay.Instructions were average, but not great. There are two videos on YouTube (as of mid-2020) that each do an amazing job of walking through the installation. Definitely check those out.The installation takes a long time. An average joe with standard hand tools (not a shop, no lift, etc.) will take 8 hours or more. Nothing was terribly difficult, there were just a lot of steps ... there’s just a ton to do and it all takes time to do right. A professional shop with lifts and all of the time-saving tools probably cuts the time in half.Everything fit tremendously well, though tight.The horns are much louder than I expected. There are several videos online, but the audio just doesn’t convey how dang loud these are.For wiring the factory horn button (middle of the steering wheel) to the Kleinn horns, you’ll need to use a 5-way relay. I’ll assume you know how the relay works or how to look this up online. The horn wiring can be found by removing the plastic shroud off the top of the radiator — just a bunch of plastic pins hold this in place. The factory horns are in a vertical stack in the center, just slightly to the passenger side. Off the top horn, there will be a wiring harness, with a standard push-to-disconnect clip on it. Disconnect this harness, pull out the friction-fit retaining pin, and then pull the wire up and you can easily access it. Grille removal not required. In my case, the tan wire was +12VDC. Cut this wire.Then, wire the relay as this: button side of the factory tan horn wire to #30; horn side of the factory tan horn wire to #87a; upfitter switch to #86; ground wire to #85; and the Kleinn solenoid to #87. #87a is normally closed. So, when the truck is off or the truck is on with upfitter off, the relay is NOT energized. Therefore, the horn button will connect through to the factory horns. When the truck is on AND upfitter is on, then the relay will be energized and the horn button will be connected to the Kleinn horns.I also got this off the Amazon Warehouse for 50% off the normal ASP. So, definitely check out to see if there are any warehouse deals with damaged packaging.Cheers.

Update: Reducing to 1 Star. After 2 months of operation, the compressor gave out. Reached out to Kleinn, received advice on how to test to ensure it's compressor. Completed at a shop that deals with all types of truck accessories, including Kleinn. Was told by Kleinn to email invoice info and they would "start paper work" and provide shipping info - would have to pull compressor, send to Kleinn for their own in-house testing. They would fix or replace and ship a new one. This compressor is used for more than horns, it supports airbags and tire inflation - I asked Kleinn to send a replacement compressor right away so we could pull the old and install the new one at the same time. I really have no interest in paying the shop labor to do this over and over again. Was told "the longest part of the process was getting the paperwork started and shipping" because I was "talk to who tests them, and obviously they're not testing while on the phone." Poor customer service on Kleinn's part.Product overall is LOUD and great - install was not EXACTLY bolt-on. Had to adjust a bit for my truck. If your truck is completely stock, you'll be able to bolt on. My truck has a grill guard and a level kit in the front; required a small bit of adjustment/fabrication by a shop to complete. Only reason it gets 4 stars and not 5 is the trouble/adjustments if your truck isn't completely stock - and, let's be real, no one is putting these bad boys on a completely stock truck haha.

The horn itself is great. The installation instructions are lacking. Including a heat shield modification that must be made to get the tank to fit. This heat shield is no where in the installation instructions.

Great price easy install. Pdf for installation has perfect pictures and diagrams to locate every nook and cranny where brackets mount. Was 200 dollars cheaper then all other prices

Move onto a different manufacture poor quality equipment poor quality install material just not worth the money