Need help with wiring of Train Horns

Ok so I bought the Outlaw Horn Blasters kit and mounted the tank with compressors on it in my bed. Horns are mounted where the stock spare used to be.

Today me and a couple buddies tried wiring them up going off of what I read on this forum and other threads online. Didn't work!!!

Full disclaimer, I don't really know what the hell I'm doing, so here I am, asking for help.

Ok so I want to wire the horns so that when Aux 4 is on, my trains horns sound when I press my steering wheel, and when Aux 4 is off my stock horns go off.

My compressor has two wires coming off of it, power and ground, and the solenoid on the horns does as well.

So I bought this relay (could easily be the wrong relay) and wired it in the following way:

Aux 4 (brown) switch wired to blue wire, blue wire tapped into compressor power and connected to 85 on relay.
Compressor ground wired to 86 on relay
Solenoid ground to ground and power to 87 on relay
Yellow wire with red tracer (stock horn wire) tapped into and wired to 30 on relay

Obviously this doesn't work. Compressor and horns tested individually and both work, so it's definitely something in my wiring, yet I have no idea how to properly wire it.

Can anyone guide me into the proper way to wire this, or to the proper parts.

Thanks in advance.

you need 2 relays to make this work. first relay disables you oem horn and the second relay triggers the train horn.

relay 1.

85 aux wire (brown is aux 4)
86 ground
87a vehicle side of horn wire
30 horn side of wire

this wire should be interrupted. meaning cut in half

this will disable your oem horn when aux 4 is activated.

relay 2

85 horn wire (-) at the horn or bcm in the passenger kick panel
86 aux 4
87 battery power
30 train horn

this makes this relay active when aux 4 is activated. a (-) input from the horn will complete the circuit

you listed you grounded your compressor to 86. that wont work. must have chassis ground.

Ive not dealt with this configuration so I cant be that much help. That being said I just wanted to let you know what I did on my setup.
I have it wired so that flipping aux4 blows the horn. Its wired to a solenoid that it fills the tank whenever it is empty. So after a blow it automatically fills.
We did this for a couple reasons. One, in CA having a horn like that wired to the factory on the steering wheel can get you in alot of trouble.
Two, its far enough away from anything to accidentally blow and takes a deliberate action to hit it. I could just see myself leaving it armed by mistake and then honking at someone on the road and give them and myself a heart attack.
Three, I didnt have to burn another switch using one as an arm function.
If you cant get your setup going id recommend trying this wiring setup. Its simple and functional.

---------- Post added at 12:27 AM ---------- Previous post was at 12:25 AM ----------

or just do what Noah says because hes the man haha

The Car Stereo Company said:

you need 2 relays to make this work. first relay disables you oem horn and the second relay triggers the train horn.

relay 1.

85 aux wire (brown is aux 4)
86 ground
87a vehicle side of horn wire
30 horn side of wire

this wire should be interrupted. meaning cut in half

this will disable your oem horn when aux 4 is activated.

relay 2

85 horn wire (-) at the horn or bcm in the passenger kick panel
86 aux 4
87 battery power
30 train horn

this makes this relay active when aux 4 is activated. a (-) input from the horn will complete the circuit

you listed you grounded your compressor to 86. that wont work. must have chassis ground.

Click to expand...

Thank you so much for this.

Quick question, where is the compressor wired in this setup?? Not to the relays at all?

i have not seen how others have wired theirs up, but there is a way to wire it with one relay, but that depends on the current draw of the solenoid. the 2 relay setup will keep you protected from overcurrent. as an electrical guy, i tend to take the safe way.

---------- Post added at 12:46 AM ---------- Previous post was at 12:45 AM ----------

how do you want the compressor wired? on with the key? do you have air storage?

The Car Stereo Company said:

i have not seen how others have wired theirs up, but there is a way to wire it with one relay, but that depends on the current draw of the solenoid. the 2 relay setup will keep you protected from overcurrent. as an electrical guy, i tend to take the safe way.

---------- Post added at 12:46 AM ---------- Previous post was at 12:45 AM ----------

how do you want the compressor wired? on with the key? do you have air storage?

Click to expand...

I honestly have no preference on how to wire it, easiest way I guess. I've heard people say not to wire it directly to the battery due to the fact that it can be damaged by the voltage draw.

I am only using the compressor for the train horns, I have CO2 for tires and tools.

so without air tanks i would wire it to relay #2 (pin 30) that way its only active when the horn is pressed. what kind of compressor?

The Car Stereo Company said:

so without air tanks i would wire it to relay #2 (pin 30) that way its only active when the horn is pressed. what kind of compressor?

Click to expand...

I do have an air tank, 2 gallon I believe. The compressor is mounted on top of it. It's a hornblasters kit, let me check the model.

Westside Offroad Group said:

Ive not dealt with this configuration so I cant be that much help. That being said I just wanted to let you know what I did on my setup.
I have it wired so that flipping aux4 blows the horn. Its wired to a solenoid that it fills the tank whenever it is empty. So after a blow it automatically fills.
We did this for a couple reasons. One, in CA having a horn like that wired to the factory on the steering wheel can get you in alot of trouble.
Two, its far enough away from anything to accidentally blow and takes a deliberate action to hit it. I could just see myself leaving it armed by mistake and then honking at someone on the road and give them and myself a heart attack.
Three, I didnt have to burn another switch using one as an arm function.
If you cant get your setup going id recommend trying this wiring setup. Its simple and functional.

---------- Post added at 12:27 AM ---------- Previous post was at 12:25 AM ----------

or just do what Noah says because hes the man haha

Click to expand...

thanks. my setup is a little complicated, but like you, its wired to an aux switch. aux 1 powers 8 additional aux switches. the compressors are on one of them. aux 3 is my train horns. so i have seperate switches for air and horn. seems to work well for me.

This is the setup I'm using.

https://www.hornblasters.com/products/details.php?i=outlaw-228-black-train-horn-kit