Bests & Worsts Reviews from Amazon

This is my 3rd set of Hella Supertone horns. The first 2 were purchased long ago to upgrade the sound of a Mercedes and Land Rover. They were made in Germany. This set was made in India. Other than buying factory replacement horns for a vehicle whose horn sound you like, buying horns based on an expectation of a certain sound or tone is actually quite difficult. I like the sound of the Supertones, but I knew that before buying them. They really sound like Mercedes Benz horns from the 1970s - early 2000s. If you like that sound, you will certainly like these. Others may find the sound kind of shrill. One thing is for sure: any prolonged blast is impossible to ignore. You will be noticed. You will be heard. These horns are directional, so attention and planning should be made to aim them forward if possible. The enclosed mounting "bracket" is useable only if you are replacing a similar style horn. Please note that you may need to fabricate a custom bracket to mount the horns properly. This is what I needed to do. Also note that these horns are actually quite large and may not fit where thd original horn was mounted. I prefer the slightly smaller 4 inch horn for ease of fitment. These were installed in a 2007 Ford Escape. I had to remove both inside front fender liners and the front bumper cover to access the original horn. Disassenbly and reassembly took over 4 hours. Fabricating mounts and installing all wiring to and from the horns and relay took a few more hours. It was worth it, but it was a full days work. Plan your time accordingly. I must note that you must use the included relay or be certain that your own vehicle has a dedicated 15 amp circuit for the original horn. Most will not. Failure to wire horn as instructed will result in lower volume. This voltage drop accounts for some of the poor reviews of this product. Also, the instructions are very clear only if you are used to reading electrical diagrams. Otherwise, they stink. Hella Relay Wiring Instructions: These instructions are for vehicles where the horn button supplies power to the horn when depressed and the ground is constant. Terminal 85: chassis ground Terminal 86: intermittent positive lead FROM steering wheel horn button TO original horn Terminal 87: output TO new horns Terminal 30: 12v constant with fuse 15A Please Let me know if this review helps. Good luck.