Topica Loopframe_Guzzi Archive


Subject: Re: STOCK HORN REPLACEMENT

Author: Eric Lamberts

Date: Oct 2, 2002, 8:11 PM

Post ID: 1711133626


On Wed, 2 Oct 2002, Robert Hawkes wrote:

 Hey all you electrical gurus,
I want to replace the stock two prong Ambo horn with a Fiamm one prong horn.
I have a hot wire and a switch wire. The Fiamm seems to be grounded just by
the hardware mount. I bought a standard 12 volt relay with 4 prongs but no
matter how I wire the thing I can't get the Faimm to sound. Any suggestions
(other than sticking to the weak stock horn)? Thanks, Bob

I'd make sure the horn was good first. Run a wire directly from the +
side of the battery to your one prong. the horn should sound.

If it doesn't, remove the horn and touch the mounting bolt to the negative
terminal of the battery and the same jumper wire you had before from the
battery + to the terminal of the horn.

If it still doesn't sound, you have a bad horn.

If it DOES sound, it means that you don't have a good ground for the horn
and you need to either run the other wire (from the original horn) to the
bolt on the horn, or clean up the frame mount to give a good ground.

Now you knopdw that you have a good horn, and a good ground.

If it STILL doesn't work, you either have a bad relay or a bad switch.

If you hold the hot horn wire from the switch to a 12v bulb and the other
part of the bulb to ground, the lamp should light when you push the horn
button. If it doesn't, you have a bad switch. If it does, then you have
a bad relay..

There will be a quiz at the end of the hour...

Good luck!

Eric Lamberts ew-@unr.edu Reno NV

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