Welcome to the North American Subaru Impreza Owners Club Thursday July 24, 2014
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Here you can view your subscribed threads, work with private messages and edit your profile and preferences Home Registration is free! Visit the NASIOC Store NASIOC Rules Search Find other members Frequently Asked Questions Calendar Archive NASIOC Upgrade Garage Logout
Go Back   NASIOC > NASIOC General > Car Audio, Video & Security

Welcome to NASIOC - The world's largest online community for Subaru enthusiasts!
Welcome to the NASIOC.com Subaru forum.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, free of charge, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!

If you have any problems with the registration process or your account login, please contact us.
* Registered users of the site do not see these ads.
Reply
 
Thread Tools Display Modes
Old 10-07-2002, 11:44 PM   #1
xfader
Scooby Specialist
 
Member#: 22495
Join Date: Aug 2002
Chapter/Region: SCIC
Location: SoCal
Vehicle:
04 BMW 330i ZHP
Metrolink

Default Question re: replacing factory alarm horn

Has anyone tried to do a mod to replace the aux horn that's installed with the factory alarm? I want a piezo sound rather than the loud annoying horn when I arm or disarm my alarm. I guess one of the issues is if the alarm goes off, is it the aux horn that goes off, or the regular car horns. Any suggestions or ideas?

-Mike
* Registered users of the site do not see these ads.
xfader is offline   Reply With Quote
Old 10-07-2002, 11:48 PM   #2
Mulder
Trust no one
Moderator
 
Member#: 11170
Join Date: Oct 2001
Chapter/Region: Tri-State
Location: NYC
Vehicle:
02 WRX
15 WRX/05 GTO

Default

I think that both the regular and alarm horns go off with the alarm, but I'd have to check the wiring manual to be sure. Also remember that the alarm horn output is pulsed rather than constant so you couldn't just connect a siren to it directly.
Mulder is offline   Reply With Quote
Old 10-08-2002, 10:33 AM   #3
xfader
Scooby Specialist
 
Member#: 22495
Join Date: Aug 2002
Chapter/Region: SCIC
Location: SoCal
Vehicle:
04 BMW 330i ZHP
Metrolink

Default

Ideally, I'd like to replace the aux horn with a piezo that makes a soft churp. Hopefully the pulsing wouldn't matter since I'm basically looking for 1 or 2 beeps just like the horn would give, only quieter. When the actual alarm goes off, then the regular horns would act as a siren. What do you think?
xfader is offline   Reply With Quote
Old 10-08-2002, 11:26 AM   #4
ludecrous
Scooby Specialist
 
Member#: 19376
Join Date: May 2002
Chapter/Region: MWSOC
Location: chi town
Vehicle:
2003 03 WRX Wagon
silver

Default

it is the main horns at the front which are activated by the Alarm.
ludecrous is offline   Reply With Quote
Old 10-08-2002, 11:40 AM   #5
xfader
Scooby Specialist
 
Member#: 22495
Join Date: Aug 2002
Chapter/Region: SCIC
Location: SoCal
Vehicle:
04 BMW 330i ZHP
Metrolink

Default

so am I wrong in assuming its as simple as replacing the aux horn with a piezo? Or is that too easy?
xfader is offline   Reply With Quote
Old 10-08-2002, 01:55 PM   #6
ludecrous
Scooby Specialist
 
Member#: 19376
Join Date: May 2002
Chapter/Region: MWSOC
Location: chi town
Vehicle:
2003 03 WRX Wagon
silver

Default

I think you would be wrong, go to your car and take a look, easy way to 100% tell is to set the arlam to "chirp mode" then take grill off disconnect the factory horns at the front , just pull the connector off and arm the cra, I think you will find - no chirp.
ludecrous is offline   Reply With Quote
Old 10-08-2002, 03:14 PM   #7
xfader
Scooby Specialist
 
Member#: 22495
Join Date: Aug 2002
Chapter/Region: SCIC
Location: SoCal
Vehicle:
04 BMW 330i ZHP
Metrolink

Default

ohhh, ok. I understand whats going on. Ludecrous believes that the main horns have the responsibility to chirp, and mulder thinks its a combination of both the main and the aux. So I guess my question is, if that's the case, then what purpose does the aux horn serve Ludecrous?
xfader is offline   Reply With Quote
Old 10-08-2002, 03:16 PM   #8
Mulder
Trust no one
Moderator
 
Member#: 11170
Join Date: Oct 2001
Chapter/Region: Tri-State
Location: NYC
Vehicle:
02 WRX
15 WRX/05 GTO

Default

The "chirp" on arm/disarm is the regular horns only, but when the alarm actually goes off the security horn will sound as well (otherwise why would it be there at all?). There is a relay for the security horn, I'll have to look at the diagram to see how it is wired.
Unless you absolutely must have an audible confirmation for arming/disarming, why not just disable the horn chirp altogether? This is a simple function using the remote. I turned mine off almost as soon as I got the car and I find the flashing parking lights/city lights to be sufficient.
Mulder is offline   Reply With Quote
Old 10-08-2002, 03:23 PM   #9
xfader
Scooby Specialist
 
Member#: 22495
Join Date: Aug 2002
Chapter/Region: SCIC
Location: SoCal
Vehicle:
04 BMW 330i ZHP
Metrolink

Default ditto

I do that too, mulder. Its just that sometimes I leave my lights on when I leave the car, and they stay on until the turbo timer shuts everything down. Doing that prevents me from seeing the visible confirmation, and even hearing the door locks snap because the engine is running.

I only bring this topic up because there was speculation that the the MY03 WRX might get the piezo chirp like the Forrester gets IIRC, but now we know it didn't. The alarm works fine, but you know how people cant leave well enough alone.
xfader is offline   Reply With Quote
Old 10-08-2002, 03:23 PM   #10
ludecrous
Scooby Specialist
 
Member#: 19376
Join Date: May 2002
Chapter/Region: MWSOC
Location: chi town
Vehicle:
2003 03 WRX Wagon
silver

Default

I think the Aux horn is there for a clever reason, say some tricky thief see's your front horns through your grill, he can just snip the wires to the horns <very easy due to their location > and break in your car. not so fast mr theif..... subaru stuck an AUX horn in the engine bay!!

This is just a guess by the way.
ludecrous is offline   Reply With Quote
Old 10-08-2002, 03:31 PM   #11
Mulder
Trust no one
Moderator
 
Member#: 11170
Join Date: Oct 2001
Chapter/Region: Tri-State
Location: NYC
Vehicle:
02 WRX
15 WRX/05 GTO

Default

Don't know how much this helps, but you can see that the security horn is driven directly from the security module, with an external relay.
Attached Images
File Type: jpg horn.jpg (40.9 KB, 306 views)
Mulder is offline   Reply With Quote
Old 10-23-2002, 10:35 AM   #12
xfader
Scooby Specialist
 
Member#: 22495
Join Date: Aug 2002
Chapter/Region: SCIC
Location: SoCal
Vehicle:
04 BMW 330i ZHP
Metrolink

Default

bump

anyone else wanna chime in?
xfader is offline   Reply With Quote
Old 10-23-2002, 11:34 AM   #13
netZ
Scooby Specialist
 
Member#: 5743
Join Date: Apr 2001
Chapter/Region: Tri-State
Location: nj/nyc
Vehicle:
2007 Kia Optima
gold brick

Default

Xfader,

I would probably look for the wires that trigger the front 2 horns whenever you disarm/arm the oem alarm system and cut that wire and attach it to a piezo siren using a relay.

Only do this if the security horn that's attached to the passenger strut tower is the actual horn that's used whenever the oem alarm is set off.

B243 has the Red/Green wire in pin 1. This is the horn relay/horn switch. Test this wire using a multimeter and disarm/arm your alarm, this should be the wire that triggers your front 2 horns for the chirps.

netZ

Quote:
Originally posted by xfader
bump

anyone else wanna chime in?

Last edited by netZ; 10-23-2002 at 11:41 AM.
netZ is offline   Reply With Quote
Old 10-24-2002, 11:31 AM   #14
Mud Pig
Scooby Newbie
 
Member#: 27611
Join Date: Oct 2002
Location: Your Mom's box.
Vehicle:
2007 FJ Cruiser
R.I.P. Mitsubishi Evo

Default

Do you really need a chirp of any kind. On my ride when the parking brake is pulled up the lights are killed automatically even if i have them switched on. Maybe you disabled your DRL's so the computer doesn't do that on your ride anymore.

Anyways, the owners manual tells you how to turn the sound off for arming and disarming the car. Personally i think it's a lot cooler with no sound at all. The lights will still blink, which indicates whether its armed or not. Just a thought my friend.
Mud Pig is offline   Reply With Quote
Old 10-24-2002, 11:37 AM   #15
xfader
Scooby Specialist
 
Member#: 22495
Join Date: Aug 2002
Chapter/Region: SCIC
Location: SoCal
Vehicle:
04 BMW 330i ZHP
Metrolink

Default

Thanks for chiming in Mud Pig. I explained earlier the reason for this topic below:

Quote:
I do that too, mulder. Its just that sometimes I leave my lights on when I leave the car, and they stay on until the turbo timer shuts everything down. Doing that prevents me from seeing the visible confirmation, and even hearing the door locks snap because the engine is running.

I only bring this topic up because there was speculation that the the MY03 WRX might get the piezo chirp like the Forrester gets IIRC, but now we know it didn't. The alarm works fine, but you know how people cant leave well enough alone.
I was thinking that it would be a simple swap of the third horn attached to the strut mount, but I guess its a little more involved than that. I just wanted some of the gurus here on i-club to take a crack at it.

-m!ke
xfader is offline   Reply With Quote
Old 10-24-2002, 12:17 PM   #16
netZ
Scooby Specialist
 
Member#: 5743
Join Date: Apr 2001
Chapter/Region: Tri-State
Location: nj/nyc
Vehicle:
2007 Kia Optima
gold brick

Default

The answer lies in this diagram. Look at connector B243 at pin 1. This is the wire that triggers your chirping. Disconnect it and attach the wire from the Security Horn Switch to a relay that powers the Piezo Siren. That's it.

netZ

Quote:
Originally posted by mulder
Don't know how much this helps, but you can see that the security horn is driven directly from the security module, with an external relay.
netZ is offline   Reply With Quote
Old 10-25-2002, 01:26 AM   #17
DDMan
Scooby Specialist
 
Member#: 11221
Join Date: Oct 2001
Location: Rocklin, California
Vehicle:
2002 2.5 RS
Black as Midnight!!!

Default

I didnt read all the stuff there, but I just replaced my horns so I know

When you arm the system, the horns in the front of the car go off (one or two beeps)

When you SET the alarm off (open a door when its armed) the horn UNDER THE HOOD (back by the firewall) goes off, while the front horns do not.
DDMan is offline   Reply With Quote
Old 10-31-2002, 11:33 PM   #18
JasonRan
Scooby Specialist
 
Member#: 163
Join Date: Aug 1999
Location: Huntsville, Alabama
Vehicle:
1999 2.5 RS
Rally Blue

Default

So has anyone actually done this mod? Will the Forester alarm upgrade not work on the WRX?
JasonRan is offline   Reply With Quote
Old 11-01-2002, 12:50 PM   #19
Evil Imports
Scooby Guru
 
Member#: 14732
Join Date: Jan 2002
Chapter/Region: SWIC
Location: Global
Vehicle:
+ 13 B8

Default

that horn did nothing in my car, i took it out and my alarm works fine
Evil Imports is offline   Reply With Quote
Old 11-02-2002, 07:29 AM   #20
netZ
Scooby Specialist
 
Member#: 5743
Join Date: Apr 2001
Chapter/Region: Tri-State
Location: nj/nyc
Vehicle:
2007 Kia Optima
gold brick

Default

that horn? the pair in the front or the one attached to the passenger strut tower?

netZ

Quote:
Originally posted by Evil Imports
that horn did nothing in my car, i took it out and my alarm works fine
netZ is offline   Reply With Quote
Old 12-13-2002, 11:32 PM   #21
jlw
Scooby Newbie
 
Member#: 12654
Join Date: Nov 2001
Location: Southport, CT
Vehicle:
02 WRX Sdn, 2.5L
Element Tuning GT65r/hdrs

Default

Has anyone changed the armed chirp? I have a buddy that has a couple year old BMW. It has a arming chirp that is almost like a wolf whistle. A lot of fun in a parking lot when women is walking near your car & you are on the other side of the parking lot.

That is what I would like to get!

Last edited by jlw; 12-14-2002 at 10:44 AM.
jlw is offline   Reply With Quote
Old 12-14-2002, 10:28 AM   #22
DrD
Scooby Guru
 
Member#: 22412
Join Date: Aug 2002
Chapter/Region: SWIC
Location: Albuquerque, NM
Vehicle:
2012 Legacy 2.5GT
Ice Silver Metallic

Default

Quote:
Originally posted by Evil Imports
that horn did nothing in my car, i took it out and my alarm works fine
When the alarm goes off, all three horns sound - so when you remove the horn under the hood, the alarm will still sound the two front horns.

The purpose of the horn under the hood is to provide something which will sound even if someone reaches under the bumper and pulls the connectors off of the two standard horns.
DrD is offline   Reply With Quote
Old 01-03-2003, 02:28 AM   #23
koloumb
Scooby Newbie
 
Member#: 28268
Join Date: Oct 2002
Chapter/Region: NWIC
Location: Oregon
Vehicle:
2002 WRX Sedan
WRB

Default

Quote:
Originally posted by netZ
The answer lies in this diagram. Look at connector B243 at pin 1. This is the wire that triggers your chirping. Disconnect it and attach the wire from the Security Horn Switch to a relay that powers the Piezo Siren. That's it.

netZ

Anyone else try this? I too would like a pleasant "chirp" [ie: Toyota Tacoma] rather than the blatant horn sound.

_0wen_
koloumb is offline   Reply With Quote
Old 02-04-2009, 03:35 PM   #24
kjgerz
Scooby Specialist
 
Member#: 121382
Join Date: Jul 2006
Chapter/Region: South East
Location: atl/NC
Vehicle:
'03 carbon
bronze pearl'd! sold...

Default

this is old, but i want to bump this to see if anyone figured a solution to this?

I would like to get rid of the annoying honk on my '03 wrx and have a more pleasant confirmation chirp instead. is there any easy upgrade for this without having to upgrade to an aftermarket alarm?
kjgerz is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
horn to replace broken alarm "beep" DieselClown Car Audio, Video & Security 14 10-15-2010 12:57 AM
Alarm horn dead. Easy replacement? mr2quick Car Audio, Video & Security 8 01-13-2009 12:29 AM
question about replacing factory head unit in 05 outback sport steely74 Car Audio, Video & Security 4 01-17-2007 11:32 AM
'00 RS: Factory alarm lights/unit work, horn doesn't Siper2 Car Audio, Video & Security 8 01-27-2006 08:04 AM
Question re: Factory Alarm Egan Car Audio, Video & Security 1 09-22-2002 01:06 PM


All times are GMT -4. The time now is 07:52 AM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2014 Axivo Inc.
Copyright ©1999 - 2014, North American Subaru Impreza Owners Club, Inc.