alarm siren replacment
Printed From: the12volt.com
Forum Name: Car Security and Convenience
Forum Discription: Car Alarms, Keyless Entries, Remote Starters, Immobilizer Bypasses, Sensors, Door Locks, Window Modules, Heated Mirrors, Heated Seats, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=137598
Printed Date: May 09, 2024 at 6:34 PM
Topic: alarm siren replacment
Posted By: chassis
Subject: alarm siren replacment
Date Posted: November 05, 2014 at 4:46 AM
Good day
Just before falling into action,can I cut out my existing alarm siren and link up an aftermarket horn if I need more noise? The alarm siren output sends a negative signal to the siren.just correct me if I'm wrong.86 Pos,85 neg output of alarm,87 12V supply fused,30 12V to horn.will this work or will the ouput be too low to engergize the coil of the relay?
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Do it once,do it right - This means no short cuts. You never get paid twice for having to do the job twice because it wasn't done right the first time.
Replies:
Posted By: howie ll
Date Posted: November 05, 2014 at 2:33 PM
Should work out fine. Diode (1N4004) across 85 and 86, band to 86 to protect the alarm.
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Amateurs assume, don't test and have problems; pros test first. I am not a free install service.
Read the installation manual, do a search here or online for your vehicle wiring before posting.
Posted By: chassis
Date Posted: November 05, 2014 at 9:38 PM
Thanks howie.do you perhaps have a diagram of the diode connection?
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Do it once,do it right - This means no short cuts. You never get paid twice for having to do the job twice because it wasn't done right the first time.
Posted By: howie ll
Date Posted: November 06, 2014 at 12:23 AM
No I described it, look in the relay section.
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Amateurs assume, don't test and have problems; pros test first. I am not a free install service.
Read the installation manual, do a search here or online for your vehicle wiring before posting.
Posted By: chassis
Date Posted: November 06, 2014 at 2:56 AM
Hi howie,please view my roughly drawing.this is if I use the existing car horn.please guide if this is correct.  ------------- Do it once,do it right - This means no short cuts. You never get paid twice for having to do the job twice because it wasn't done right the first time.
Posted By: chassis
Date Posted: November 06, 2014 at 1:13 PM
 ------------- Do it once,do it right - This means no short cuts. You never get paid twice for having to do the job twice because it wasn't done right the first time.
Posted By: howie ll
Date Posted: November 06, 2014 at 3:39 PM
Look at the bottom diagram on this page:-
https://www.the12volt.com/doorlocks/page3.asp#4w
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Amateurs assume, don't test and have problems; pros test first. I am not a free install service.
Read the installation manual, do a search here or online for your vehicle wiring before posting.
Posted By: kreg357
Date Posted: November 06, 2014 at 5:35 PM
There are some photo's of the coil quenching diode addition to a relay harness in this R/S Pictorial :
https://www.the12volt.com/installbay/forum_posts.asp?tid=133810 ------------- Soldering is fun!
Posted By: chassis
Date Posted: November 06, 2014 at 6:09 PM
Thanks kreg and howie.I understand now.anode goes to negative coil and cathode to positive coil.
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Do it once,do it right - This means no short cuts. You never get paid twice for having to do the job twice because it wasn't done right the first time.
Posted By: howie ll
Date Posted: November 07, 2014 at 2:44 AM
You do of course realise KM that we probably use the same source and parts for our relay set-ups? Even down to the shrinkie over the diode?
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Amateurs assume, don't test and have problems; pros test first. I am not a free install service.
Read the installation manual, do a search here or online for your vehicle wiring before posting.
Posted By: kreg357
Date Posted: November 07, 2014 at 6:19 AM
@ Howie II Yes, but my parts cost less.  No VAT here yet. ------------- Soldering is fun!
Posted By: howie ll
Date Posted: November 07, 2014 at 9:47 AM
That's true, yet another hidden tax.
Went to a family funeral today, cousin over who works for OECD in Paris, she can't get over the surveillance in the UK.
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Amateurs assume, don't test and have problems; pros test first. I am not a free install service.
Read the installation manual, do a search here or online for your vehicle wiring before posting.
Posted By: howie ll
Date Posted: November 07, 2014 at 4:56 PM
And more trivia, 60/40 lead solder, half kilo approx 1lb = £30, = $45!!
600% in the last 5 years.
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Amateurs assume, don't test and have problems; pros test first. I am not a free install service.
Read the installation manual, do a search here or online for your vehicle wiring before posting.
Posted By: catback
Date Posted: November 08, 2014 at 7:32 AM
Since no one has inquired, I have to ask if the system, getting it's siren replaced with the car horn, has the ability to change from a constant (siren) to a pulsed (horn) output. If not, the change will be interesting.
Posted By: howie ll
Date Posted: November 08, 2014 at 7:36 AM
Yes CB I'm well aware because I watch other posts rather than coming in with no research.
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Amateurs assume, don't test and have problems; pros test first. I am not a free install service.
Read the installation manual, do a search here or online for your vehicle wiring before posting.
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