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Unread 03-11-2010, 12:56 PM   #1
DirtyJeepBoy
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Annoying Crappy Product

Ok so I ordered the chrome hawk air horn off trainhorns.net..

sounds like a simple install..

well I'm confused, it came with no instructions and they don't have any..

Everything is already on the relay to the mini-compressor except a long red wire and a long black wire, they both come from the relay.

Heres a drawing of the diagram on the relay:



And heres a pic of the air horn and the wires:




I already tried to tie the red into the red and black into the black of the factory horn wires, but it didn't sound like it was getting enough power cause it was pretty much just blowing a little air.

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Unread 03-11-2010, 01:04 PM   #2
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I'd have to see it to figure it out.
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Unread 03-11-2010, 01:07 PM   #3
DirtyJeepBoy
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:
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Unread 03-11-2010, 01:10 PM   #4
muddy93
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Hook it up just like any other relay.

terminal 30 on the relay will go to your batery(fused of corse)
terminal 87 will be the feed/hot for the compressor
terminals 85 and 86, one will be grounded, and the other will be + from your switch. If your stock horn wiring supplies both + and ground to the stock horn, then you can just hook those two wires up to terminals 85 and 86.
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Unread 03-11-2010, 01:40 PM   #5
DirtyJeepBoy
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Thats the thing though that confuses me...

Theres like a mold that all the wires are already harnessed into, then you put the mold over the relay connecting them all, which leaves you with a long black and a long red...

when I pulled the mold off, there was the prongs on the relay..

The bottom terminal has 87a and 30 on it.. (2 black wires), one black wire is a long one not connected, and the other loops into 85 (the right terminal)
Then the top terminal has 1 blue, which goes to the air compressor.

The terminal on the left has, what it says 86. Then red wires come out of that, 1 red long not connected, and a short one that connects to the air compressor aswell..

Which leaves me with a long red, and a long black... I tried to connect the red into the stock horn postive, and the black into the stock horn black...

Nothing happens when I hit the horn...

I put the long black wire in the factory horn negative slot, then touched the red wire to the postive terminal on the battery and scared the **** outta me when the horn went off...

So, I've got no idea how to wire this still.
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Unread 03-11-2010, 02:04 PM   #6
DirtyJeepBoy
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Soooooooo frustrated!

I spliced the black and red into the stock factory horn wires , and now it doesn't work... I don't know what else to do??????

I cut the red splice off now... So I've got the black wire connected to the factory horn black wire... Then when I touch the red wire to the battery, it honks.. How do i get this thing to honk when I push my horn????
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Unread 03-11-2010, 03:41 PM   #7
W7NB
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Here is a picture of the internals of a typical Bosch-style automotive relay. When +12V is applied between pins 85 and 86 the coil becomes a magnet which pulls the lever down making a connection between pins 30 and 87.



So hook the switched leg (Hot from the horn button) to 85, ground 86, hook battery power to 30 and the red from the horn to 87.

Hook the horn ground to either chassis ground or to 86 then chassis ground.
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Unread 03-11-2010, 04:18 PM   #8
57plymouth
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Your pigtail on the relay should have four wires, and three leading off. If I were you, I would throw away the pig tail and start over. Use the pinout as described by W7NB.
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Unread 03-11-2010, 05:10 PM   #9
DirtyJeepBoy
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I re-wired everything exactly like you said and it still won't work......
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Unread 03-11-2010, 05:46 PM   #10
timatoe
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Leave the wiring the way it was from the company you bought it from, put the red wire to the battery and the black one to the 12v from the horn. If that doesn't work switch them around. If that doesn't work call the company you bought it from.

You need power waiting at the relay basically, and you're only using the horn button like a switch, sorta like a light in your house.
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Unread 03-11-2010, 05:56 PM   #11
W7NB
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Another thought. Does the horn circuit you are using provide power or ground? I thought factory horns simply grounded the relay allowing it to actuate. If that's the case I can tell you how to wire this. Do you have a test meter or test light?
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Unread 03-11-2010, 05:59 PM   #12
timatoe
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Originally Posted by W7NB View Post
Another thought. Does the horn circuit you are using provide power or ground? I thought factory horns simply grounded the relay allowing it to actuate. If that's the case I can tell you how to wire this. Do you have a test meter or test light?
I think you're right about the stock horn and I didn't consider that previously.
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Unread 03-11-2010, 06:00 PM   #13
laybackman
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Put the RED wire to the + side of the battey and touch the BLACK wire to a ground. If the horn works and it should, then wire up a switch to the Black wire that then goes to a ground.
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Unread 03-11-2010, 07:53 PM   #14
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