The person who had this truck before me put in an aftermarket horn. It was a car alarm horn (I don't understand why) but now I want to hook up my stock horns. Problem is, I don't know where to start. I got rid of everything aftermarket. As for wiring all they did was splice into the green/red wire for one of the horns. I have some pictures. I don't know how helpful they will be. But I've also searched around and people are claiming to have 1 horn. I have 3.















This harness won't plug into the horn in the upper corner closet to the fender. But the harness in the middle horn will plug into either the one closest to render or the middle horn. They're interchangeable. But this connecter is the correct horn connector.

 

If you don't have one yet, grab the service manual from the thread in the faq section. Wiring diagrams are in there, and should clue you in on what wires go where.

I think my truck only has one horn.....

 

Mine had two, which I swapped for one louder aftermarket one.

 

I tried to open it and it's not opening. I didn't know those were there either until now. Thanks. I'll keep trying

 

I would like to eventually get some air horns. I work at Peterbilt and wanna buy some of those but then I would have to get a compressor and tank with everything else. It can be a bit expensive. So I'm at least trying to get these workin for now. I'm not sure why I have 3 lol

 

The Wolo bad boy is a mini self-contained air horn.

 

You should have two horns, There are different tones for the two that come stock. Maybe somebody added the third one.

 

Or move straight to the (mini) air horn. For $40, they have the bad boy "max."


http://smile.amazon.com/Wolo-419-Bad...=sr_1_1&sr=8-1

 

Are these self contained air horns actually loud? Price isn't bad

 

Yep. I have one on the Harley too and people are always looking for the big rig.