Stock horn replacement

[Stevev]

Hey guys
I ordered a new louder horn and it only has a blue power wire and the unit grounds when you bolt it in I guess
the current horn has two wires with identical plugs any idea on how I would wire it so I have 24v to the new horn?

 

[GasTurbineTech]

Wire 26a is 24+ power to the horn, wire 25a is the horn button, which grounds the circuit. You need to figure out how to make the horn button ground to activate the horn.

 

[GasTurbineTech]

Snap shot from TM

 

[Andyrv6av8r]

Use a meter to check which wire has power while someone is pressing the horn button. Make sure the switch is on.

 

[Stevev]

****
I figure it would be easy
so are both wires power?
i tried testing them with my meter individually and got nothing when pressing the horn but old horn works fine

 

[GasTurbineTech]

Can you read the wire labels? Did you test for voltage with light switch in service drive?

 

[Andyrv6av8r]

Wire 26a is 24+ power to the horn, wire 25a is the horn button, which grounds the circuit. You need to figure out how to make the horn button ground to activate the horn.

It seems like you need to insulate the horn from ground when you mount it. Connect 26a to the wire on the horn. Connect 25a to the horn body.

 

[Andyrv6av8r]

I installed new horns but they had 2 wires.

 

[Stevev]

Both wires are labeled and i
marked them so I can put the old horn back if needed

 

[Stevev]

This was a cheap horn
only $30 and is 350 db
is there a horn you recommend?
i just wanted a louder one then the mouse squeak I have now...lol

 

[Stevev]

26a to the blue power wire on the horn
25a to the horn body to ground it
did the trick
THANK YOU SO MUCH

 

[98G]

350db? Really?

 

[Stevev]

That what the boy said
it’s prob almost twice as loud as stock

 

[98G]

That what the boy said
it’s prob almost twice as loud as stock

Not plausible. Graph of examples -



Edit to add 2nd graph -



135dB sounds plausible. I'm glad you got it successfully installed. I learned something about the dB scale as a result....

 

[GasTurbineTech]

The Chinese factory likely confused 350HZ and 350DB!

350db? Really?

 

[Chief B]

This was a cheap horn
only $30 and is 350 db
is there a horn you recommend?
i just wanted a louder one then the mouse squeak I have now...lol

This is what I added to mine. For the button I simply added a button for it to the ammo can i mounted on the radio tray.

Sent from my iPhone using Tapatalk

 

[donnerwetter58]

A relay in the circuit will work also. Wire 26a to one side of the windings as well as one contact. The other side of the windings is connected to 25a. The other contact is wired to the single horn wire. The horn is grounded through its mounting.
The horn button grounds the relay when pressed, sending +24 to the horn.