Air horn install???

2000silverz28 · July 22, 2003

Anybody ever installed one of these? I'm helping my nephew install one and I have a few questions. The instructions it came with aren't much help. What I would like to do is hook it up to a push button switch instead of the horn button. It came with a relay but I'm not really sure what it does. It came with the air compressor which has a + and - hook up. If I get a push button switch it'll have a + and - hook up. My question is how do I wire this up using the relay or can I just forget the relay and just wire this straight to the battery? I don't want to mess anything up I just want to eliminate some of the wiring. Thanks.

Steve

03HDINTEX · July 22, 2003

Can't help w/ install but I have a few questions.

Where did he get the air horn...what brand, price?

I'm interested in getting one for my truck.

Thanks in advance, hope somebody here can help you out.

kshuart · July 22, 2003

I put some small air horns on my motorcycle. The relay is there to keep the amps down that go through the switch. Most switches can't take that much power. Also, most switches use a ground to activate the relay. If I were you, I would run a power wire (either full time power or key switch power) to the relay, and then a wire from the relay to the switch. From the switch, just run a wire to ground. On the other side of the relay, you need to run a wire from the battery (or good power supply), then from the relay to the (+) side of the compressor. The (-) side of the compressor just needs to go to ground. If I had a diagram of the relay terminals I could tell you which one goes to what, but I don't have that in front of me. If there isn't a diagram, does it have numbers like 86, 87, etc.?? Just think of it as 2 separate circuits. The circuit with the picture of a coil on it is for the switch. As the coil is energized, it pulls the other switch closed, which provides power to the horn. The coil inside the relay is the load for that circuit (kind of like a light bulb). The compressor is the load for the other circuit.

LarryE · July 22, 2003

I just helped a guy that does our alternators fix a kit for his four wheeler

I made my own We took the horns from one of our 18 wheelers and built a 2 gallon tank, and used a small compressor with a switch to turn it on so it wouldn't run off the battery all the time.

when you push 80+ psi through these bad boys you better have ear plugs

points · July 22, 2003

I installed my air horns last fall and i love them so much. I sound like a semi coming down the road. Easy to install, i made a mount for it.

tmf6902 · July 22, 2003

when you talk air horns are you talking the 130db big rig bad boys, or the dixie plasitic airhors you buy at pepboys.....if your talking the big airhors...that's cool as sh*t, but where you gonna mount it, I don't need 12 inch horns on my roof or anything but it would be great to scare old people with...so where do you mount your horn...LOL

The SPEEDY · July 23, 2003

Can you give me the numbers off the back of the relay. Not the part number, the terminals on it should each be labled with a number. I can probably help you with those.