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Old 21-02-2009, 02:43 PM   #1
Astina_323_Owner
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Installing Air Horns

hey ppl i want to install a set of air horns in my car.... how do i wire them up.....
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Old 21-02-2009, 04:57 PM   #2
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if ur replacing the standard horn, just use the power wire at the horn and ground to the chassis.

If you're using them as additional horns you probably want a button in the car. That can draw from an Accessories line ( the lighter is a convenient source ) and the switch trigger a relay . That relay would close a fused power line to the air horns, which can ground to chassis
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Old 21-02-2009, 06:33 PM   #3
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Quote:
Originally Posted by Dogo View Post
if ur replacing the standard horn, just use the power wire at the horn and ground to the chassis.

If you're using them as additional horns you probably want a button in the car. That can draw from an Accessories line ( the lighter is a convenient source ) and the switch trigger a relay . That relay would close a fused power line to the air horns, which can ground to chassis
i will replace the org with air horns... by the way these air horns come of a Kenworth truck
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Old 21-02-2009, 10:22 PM   #4
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Have you checked that its legal to be used in a passenger car ?
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Old 22-02-2009, 08:38 AM   #5
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Quote:
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Have you checked that its legal to be used in a passenger car ?
you see people on www.youtube.com and search for air horns..... these people have them in passanger cars , terriorrising there local streets... havent seen one get pulled up by a cop for using them
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Old 22-02-2009, 12:43 PM   #6
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if they dont get pulled over it doesnt mean its not illegal. im pretty sure that air horns ARE illegal but
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Old 22-02-2009, 08:45 PM   #7
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Quote:
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if they dont get pulled over it doesnt mean its not illegal. im pretty sure that air horns ARE illegal but
not as far as i'm aware. i was going to be using some smaller ones
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Old 16-03-2009, 12:35 AM   #8
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Air Horns ARE NO ILLIGAL IN ANY PART OF AUSTRALIA
Have you ever noted trucks - Taxis use them same with many heavy council operating equipment

What is illigal is to have them hooked up to an Alarm.
alarms can only be approx 98DB

A air horn sold for a pessenger Vehicle is limit to a limit of about 104DB or so. OR must make a european standard.
You will note the more expensive and decent FIMA or FRIM brand the italian one meets these requirments but your nice chinese one does not.

okay how to wire up

USE THE DIAGRAM PROVIDED

but use a new and water proof type decent quality fuse holder and Position your Compressor that will weight a fair whack - don't be afriad to give it a decent mounting either.

I have tripples on my wagon and twins on my 6.

But make sure it's mounted well - rubber isolating mounts is good as well but as it's not always on no esential.

Make sure it's in weather proof area too. you don't want a hose to hit it or road water.

but you use the normal horn as trigger wire for the Relay to earth. And it's powered direclty via the battery- reason for fuse.
I've seen many fail on many taxi's mostly due to the poor installation and cheap fuse holders used.
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Old 16-03-2009, 08:28 AM   #9
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Do you have a link to the ADR for the requirements ? I'm interested to find out exactly what they are
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Old 16-03-2009, 12:46 PM   #10
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Quote:
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Do you have a link to the ADR for the requirements ? I'm interested to find out exactly what they are
http://www.vicroads.vic.gov.au/NR/rd...340/0/VSI8.pdf
Single tone only air horns in vic.
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Old 16-03-2009, 02:41 PM   #11
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thanks - I'll read it after work
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Old 16-03-2009, 04:02 PM   #12
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yeah varying in states.

Last time I had the ADR's i got them off the governments website
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