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GA Dawg · 11-28-2022, 07:28 PM

I have a 2004 MA Gasser 3778, I'm looking for the actual process for activating the top mounted electric train horns. Do I hit the center steering wheel horn then turn the dash switch on then hit steering wheel horn again? Or do you just turn on the dash switch and the "Electric Train horns" are now primary? I removed the panel that the Air Horn switch is mounted in. I see 2 wires going to switch… I did not have 12vdc on either terminal… 1 wire was black with red tracer & labeled horn… can’t remember the other wire color… Does anyone know where I can find a schematic & or know if the dash mounted switch activates a relay? I did check the "Horn" 50-amp fuse in the fuse block in the engine bay it was good.... TIA

bevandtomH · 11-29-2022, 08:26 AM

The switch, set to air horn, will now be your primary.
We leave ours on all the time.
Sorry, can’t help you with the wiring question.

JFXG · 12-01-2022, 12:01 AM

Dawg…. I’m assuming from the nature of your questions that something is not working, or you think it’s not working correctly.
I have a set of Hadleys on the roof of my DutchStar and a standard 12V vehicle horn as well.
The steering wheel center controls all horns. The 12V horn is always live. The Hadleys are only live when the panel Air Horn switch is set to ON. The panel switch only enables the air horns. The activation is solely controlled by the steering wheel center. With the Air Horn set to ON, the steering wheel center gives me both the air horns and the lighter horn together.
Hope this helps.

Onyrlef · 12-01-2022, 01:51 AM

Not exactly germaine, but reminded me of back in the 80's, we rigged up a real locomotive horn to the wheelhouse on a towboat down in Aransas Pass, It required a 1" air line and it definitely got the attention of the weekend warriors.

STRich · 12-01-2022, 08:16 AM

Not to side track this too far, but I picked up some really fast switching air valves and want to set the horns up with an Arduino to mimic the Hadleys in The Car :-)
https://youtu.be/j6-yVoJTCo8

GA Dawg · 12-02-2022, 08:03 AM

Quote:

Originally Posted by JFXG

Dawg…. I’m assuming from the nature of your questions that something is not working, or you think it’s not working correctly.
I have a set of Hadleys on the roof of my DutchStar and a standard 12V vehicle horn as well.
The steering wheel center controls all horns. The 12V horn is always live. The Hadleys are only live when the panel Air Horn switch is set to ON. The panel switch only enables the air horns. The activation is solely controlled by the steering wheel center. With the Air Horn set to ON, the steering wheel center gives me both the air horns and the lighter horn together.
Hope this helps.

Thank you JFXG... Yes my "electric horns" do not work. I'm also a member of a another forum dedicated to Gas Newmars. Individuals keep posting diffent procedures to activate the "Electric train horns". Now I know to turn on the dash switch on, then verify I "assume 12vdc" on 1 side of the switch and try to map the electrical circuit and verify I have good power & ground to the horns themselves.