Making a police siren become the alarm output
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=4428
Printed Date: May 20, 2024 at 7:56 AM
Topic: Making a police siren become the alarm output
Posted By: ss2000sm
Subject: Making a police siren become the alarm output
Date Posted: October 13, 2002 at 1:55 PM
Hello, I am a Vol. firefighter so I can have a siren in my car. I was thinking of making a dedicated siren left on the ON position so when my alarm is triggered it will be a very loud and attention getting sound. To hook up a siren all that is needed is power, ground, and 2 speaker wires. What do I have to do to get it to work with a prestige APS25KB. My friends paid the local installer $150 for just this option, it also has a distinctive arm/disarm chirp since the siren is activated for a second. Please help me out with this. The last time I tried I blew the siren output to the brain. Thanks, Steven
Replies:
Posted By: Ohmz
Date Posted: October 13, 2002 at 5:28 PM
Does the siren sound if you hook up just power and ground? I don't recall seeing an extra set of speaker wires on a siren.
Posted By: ss2000sm
Date Posted: October 13, 2002 at 5:46 PM
No it doesnt, I have a speaker for the siren, that is not the problem. If I leave the siren on and when power is given it will sound off, but how do i connect it to the alarm system? Thanks Steven
Posted By: Ohmz
Date Posted: October 13, 2002 at 6:07 PM
You should disconnect the alarm siren first. Then you should test the wire that is coming from inside. (There should only be one output for the alarm siren) The wire should read positive when the alarm is triggered. You can then hook it to the red wire of your police siren, and ground the black wire to the metal of the car. *** You should really use a relay. Hook it up between the alarm output and the siren. The reason for this is that you can blow your alarm output because the police siren needs to draw more power. A second reason is that the siren might not be so loud as expected. *** Note: The siren may interfere with the alarm's transmitters causing them not to work properly. The alarm might be triggered and the transmitter may not be able to shut off the alarm. This is due to the frequency of the police siren.
Posted By: ss2000sm
Date Posted: October 13, 2002 at 6:14 PM
I originally blew the output by not using a relay. What type of relay should I use? Steven
Posted By: Ohmz
Date Posted: October 13, 2002 at 6:18 PM
You can use any 5 Pin relay. I usually use Bosch. Just make sure you can read the numbers on it.. 85, 86, 87A ,etc....
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My Personal Installer Note: Connectors are easy, neat, and professional. But do you know how to crimp properly?
Posted By: ss2000sm
Date Posted: October 13, 2002 at 6:19 PM
I really dont know much about relays. Can you go into more detail of how and where i should connect the wires
Posted By: Ohmz
Date Posted: October 13, 2002 at 6:35 PM
- connect 85 to ground - connect 30 to positive (fused to the battery) - connect 86 to the alarm output - connect 87 to the red wire of your siren This should help out! ------------- My Personal Installer Note: Connectors are easy, neat, and professional. But do you know how to crimp properly?
Posted By: ss2000sm
Date Posted: October 13, 2002 at 6:38 PM
What do you mean crimp properly? Also what type of relay is it? Steven
Posted By: Ohmz
Date Posted: October 13, 2002 at 6:53 PM
SPDT Relay : (Single Pole Double Throw Relay) Oh that's just my little saying. Some installers don't realize that there is "right way" to crimp the connectors on to the wires. Most problem jobs that I had to trouble shoot were caused by poor connections. ------------- My Personal Installer Note: Connectors are easy, neat, and professional. But do you know how to crimp properly?
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