FARBIN Mini Air Horn 12V Loud Car Horn，Chrome Zinc Dual Trumpet with Compressor Wire Harness and Button for Any 12V Vehicles Trucks Lorrys Cars SUV RV Motorcycles Off Road (12V, Mini version + Button)

I received the first unit and the air compressor was bad, Amazon sent a replacement next day and this one was missing the sir compressor, installation hardware and wiring harness . The box was open and not even a little piece of tape to keep the parts secured, I’m sure by the end of the day will be parts in the vsn

The sound is great when they both go off . Had them sound like a dying chicken when one goes and partially the second goes off . Will keep playing with them for a while and then take them apart to see what’s causing the issue .

Product is much better made than some plastic models I got at Harbor Freight and gives out a nice deep and loud, fairly robust sound for what they are. I mount a 2twin set as well as a long single and two compressor pumps. I just finished installng them so if a problem occurs with longevity or reliability only time will tell. I mounted these in a 2017 Subaru Crosstrek and found the best place to locate them is by taking off the front grill which turned out to be as easy as 2 phillips screws and 10 round plastic push pull fasteners. Mounting 2 downward facing at a 45 degree angle in front of the radiator on the passenger side with the single long horn laying horizontally across the top area in front of the radiator at a slightly downward angle. The compressors then fit nicely on each side of the top left and right of the radiator also inside the area between the front grill and radiator. I removed the stock horns and simply made a splitter wire and plugged directly into the original horn wire in front. I used the other horn wire to mount another Farbin twin set in the void located behind the front bumper and forward of the front tire on the passenger side having found very limited room due the the washer reservoir on the driver or left side. I added these after the first three so I removed the bumper simply by removing a few round plastic push/pull fasteners (see youtube 2017 crosstrek front bumper removal if you decide to also do this at the same time as the first 3 as this avoids the need to remove grill separately as it can remain attached to the bumper thus avoiding detaching it separately. I sound like a big rig for sure and although not quite as loud as a train it's so loud if honked to close to pedestrians the sudden surprise makes people instinctively nearly jump out of their shoes with their initial reaction so use with care and discrepancy.

After hours trying to understand the fricken relay and one nights sleep. I was able to get it working.Previously had an air horn with compressor a tank and a train horn. This has not enough power to push the train horn and the "trumpets " this comes with sound a bit cheesy.This works yes . Instructions what are instructions? Never saw any!

I thought it might be a bit louder but it is better than the horn that came with my car. I coupled it with a wireless "Wolo" remote control and it was very easy to install. Didn't have to go thru the "Firewall" .