scootsk
Long Island, NY
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I've had problems with my hadley air horns on my TV. I installed them years ago with no problems. Recently the horns started blowing on their own, they would stay open until all the air depleted. I cleaned the solenoid and that worked for a few hours. I have to remove the fuse to stop the compressor since the air goes right out of the horns.
Today I installed a brand new solenoid, SAME PROBLEM! I figured maybe he relay is faulty, changed that, SAME PROBLEM! I even disconnected the wires from the solenoid and the air still leaks.
Any help would be appreciated.
Don, Kathleen and our little men Henry, Will and Bailey the Wonder Wheaten
02' Chevy Silverado 3500 Crew Cab 4x4 Dually 8.1/Allison (The Gasoholic)
2010 Jayco 351 RLSA Fifth Wheel
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MrWizard
Traveling
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Joined: 06/27/2004
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I don't have your horns
I assume by solenoid you are talking about a 12v controlled air valve that goes between the compressor and the horns
now .. IF the wires are totally disconnected from that valve and the horn blows the valve is bad or possible the the two airlines are on backwards on the wrong ports
if the air leaks but the horn is not making noise, i suggest you replace the hose between the compressor tank and the valve
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Works2RV
Summerville, SC, USA
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Have you checked the switch/horn button that activates the relay? Ours is activated by the horn button on the steering wheel. There could be an intermittent short there or in the interface between the steering wheel and the steering column or the button sticks.
I would disconnect the coil side of the relay and look for voltage ( or ground depending on how yours is wired ) on those leads - move the steering wheel/button to see if the voltage/ground comes and goes.
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scootsk
Long Island, NY
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Works2RV wrote:Have you checked the switch/horn button that activates the relay? Ours is activated by the horn button on the steering wheel. There could be an intermittent short there or in the interface between the steering wheel and the steering column or the button sticks.
I would disconnect the coil side of the relay and look for voltage ( or ground depending on how yours is wired ) on those leads - move the steering wheel/button to see if the voltage/ground comes and goes.
The air horns are hooked to the steering wheel horn switch. They are also hooked to the stock horns. I figured if there is a short, the stock horns would go off as well.
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recycler
michigan
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it sounds like a short , but being hooked to the stock horns as well 
thinking aloud on this part...if the stock horns require more power than the air solenoid maybe it goes off with out setting off the stock horns and the air ones being louder the stock ones might not be noticeable if they are trying to blow...
throwing the idea out there
1968 franklin 11fk
back to my 93 cummins
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scootsk
Long Island, NY
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I found the problem. The ground was weak. I found a new ground point and it's fine. I am out 50 dollars off a new solenoid and relay. UGH! I could have used hat money for something else during this camping season. Oh well.
Thank you for all your help.
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ScottG
Bothell Wa.
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The only thing I've seen do what you describe (in my limited experience) is excess pressure. The solenoid valves are only good for so much pressure and higher than that will result in the valves leaking.
Scott, Grace and Wesly
2003 Dodge 3500 4x4, 6 speed Cummins (lightly bombed),
2004 Forest River 25RKS many, many mods.
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scootsk
Long Island, NY
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ScottG wrote:The only thing I've seen do what you describe (in my limited experience) is excess pressure. The solenoid valves are only good for so much pressure and higher than that will result in the valves leaking.
Scott, the horn would start blowing as soon as there was enough pressure. It would be a very low moan. Fixing the ground wire seems to have fixed the problem for now.
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Works2RV
Summerville, SC, USA
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scootsk wrote:I found the problem. The ground was weak. I found a new ground point and it's fine. I am out 50 dollars off a new solenoid and relay. UGH! I could have used hat money for something else during this camping season. Oh well.
Thank you for all your help.
Great!!
Glad you found the problem -- want to thank you for letting us know what you found - many don't ;-(
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JohnQ
Port Angeles, Wa., (Freshwater Bay)
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My Hadley Air Horn Problem (s) are just the opposite. My compressor provides air to the tank which services the Air Horns, Step Slide Cover (air operated), and the PAC Brake. I found the problem when both the step slide cover and air horns would not operate but the PAC Brake was OK. On my Safari 12 vds electrical distribution bay it listed 2 15 amp fuses that were labled air horn, so I changed both. The PAC Brake still works fine and the step slide cover now works but the air horns are still inop. That leads me to conclude that I have a faulty Air Horn solenoid based upon the Hadley website diagrams. The problem is that I have No Idea where the solenoid is located.
1997 Safari Serengeti M-4040 Cat 300 &
2002 Jetti TDI Toad
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