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96 Honda Accord horn output


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mad550 
Copper - Posts: 201
Copper spacespace
Joined: February 23, 2006
Location: Australia
Posted: February 28, 2006 at 8:10 PM / IP Logged  
Yeah the horn works through a relay, the steering wheel switch privides a small current ground, so yeah just hook your alarm/immobiliser the the wire on the colum. 
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Do it right the first time or don't do it at all.
copekyle 
Member - Posts: 36
Member spacespace
Joined: January 04, 2006
Posted: February 28, 2006 at 8:19 PM / IP Logged  
So I wired the relay today and it doesn't work. Does it matter that when the alarm is off it shows 12v and when it is engaged it drops to like 3v? I still think my siren output is fried. Anyone else have an idea?
dualsport 
Silver - Posts: 983
Silver spacespace
Joined: September 27, 2005
Location: United States
Posted: February 28, 2006 at 10:45 PM / IP Logged  
When you say it is engaged, do you mean that's when the siren is supposed to be sounding?
Are your measurements with the siren hooked up along with the relay as in the diagram above, or just the relay?
As long as you see a reliable change in the voltage, you can make it work even if the output driver is degraded, if you want to add some extra circuitry to it.
copekyle 
Member - Posts: 36
Member spacespace
Joined: January 04, 2006
Posted: March 01, 2006 at 1:05 PM / IP Logged  
Yes, when the siren is supposed to be sounding, there is a drop in voltage to about 3v. How can I make this work?
copekyle 
Member - Posts: 36
Member spacespace
Joined: January 04, 2006
Posted: March 01, 2006 at 1:07 PM / IP Logged  
I have done that, and when I touch it to a ground, it doesn't honk. So I'm not sure what the problem is.
dualsport 
Silver - Posts: 983
Silver spacespace
Joined: September 27, 2005
Location: United States
Posted: March 01, 2006 at 4:03 PM / IP Logged  
In your original setup with the siren, is the alarm output ground switching the siren? That is, the siren (+) gets a constant 12V, and then it's supposed to sound off when the alarm output going to the (-) side of the siren power pulls to ground-
As far as the horn, maybe you're tapped in directly at the horn power instead of a relay control; measure the voltage when you honk it manually to see what it does.
copekyle 
Member - Posts: 36
Member spacespace
Joined: January 04, 2006
Posted: March 01, 2006 at 9:19 PM / IP Logged  
In the original setup, the siren was supposed to be connected to the output from the brain (a 2A positive) and then the other wire is grounded. This is why I think that there is a problem with my siren output. It should not show a constant 12V and then drop when the alarm is engaged, right? Anyways, how would I go about wiring it, so it would honk the horn? I tried the diagram earlier in this thread and it didn't work for me.
dualsport 
Silver - Posts: 983
Silver spacespace
Joined: September 27, 2005
Location: United States
Posted: March 01, 2006 at 9:55 PM / IP Logged  
That seems to be a very strange way for it to fail-
Are you measuring this constant 12V coming out with the wire disconnected from everything else? And the same for the 3V you measured?
Just want to be sure it's not being affected by something you have hooked up to it, before adding on another relay driver stage-
catalin capota 
Copper - Posts: 74
Copper spacespace
Joined: December 28, 2005
Location: British Columbia, Canada
Posted: March 01, 2006 at 10:03 PM / IP Logged  
Sure it is, that means it's chirping when armed... and twice to 12volts positive when disarmed.
copekyle 
Member - Posts: 36
Member spacespace
Joined: January 04, 2006
Posted: March 01, 2006 at 10:41 PM / IP Logged  
Yes, when I measure the voltage the wire is coming directly from the brain and there is nothing else connected.
Catalin capota- does this 12v pulse? Mine stays constant after engaged. Then when the system is set into panic mode, the voltage drops to around 3v.
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