Karl,

You should have used the original horn wiring and switch, a double throw
toggle switch will give you an option to use either horns.

Steven
82 westy
Manila Philippines

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> From: Karl F. Bloss <bloss@ENTER.NET>
> To: Vanagon@VANAGON.COM
> Subject: auxiliary horn
> Date: Saturday, August 15, 1998 4:33 PM
>
> I asked a few days ago about horn relays and found out there was
> none.  The reason for asking is that I wanted a bit more oomph from
> an audio warning device and decided on air horns.
>
> Now, the Wolo cheapie set I got said to use a 30A primary circuit and
> a relay to set it off.  Whoa!  30A!  Well, I tried a few alligator
> clip tests and sure enough, it burns out a 10A fuse, but 20A seems to
> work.
>
> After wrestling with how to do the wiring, I decided to keep it
> separate from the horn circuit and installed a button on the steering
> column.  Not as intuitive, but still not bad.  I ran a separate fused
> line directly from the battery and through the firewall to the
> compressor.  The compressor and horns are mounted on the frame near
> the "meep-meep" horn.  I bled the button circuit power off the
> cigarette lighter and mounted the relay to the right of the steering
> column.
>
> The sound is pretty impressive and unlike some stories I heard of lag
> in air horns, this one comes on just about right away.  I've already
> managed to scare some geese and my wife said the cat went through the
> ceiling when I was testing (even though the door to the house was
> closed).
>
> Maybe not as elegant a solution as Michael Sullivan with his six horn
> array, but still LOUD.  >:->
>
> -Karl
>
> Karl and Kristina Bloss, Trexlertown, PA
> '87 GL Weekender  "Beverley"
> Busses by the Trail: http://www.enter.net/~bloss/vw/bbtt