siren addition
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=12461
Printed Date: May 14, 2024 at 7:09 PM
Topic: siren addition
Posted By: dyer
Subject: siren addition
Date Posted: April 20, 2003 at 11:49 AM
Can I add a siren to an alarm without an output? I don't need it to be able to go off, I just want a chirp for when I lock and unlock. My doorlock system on the car is a single wire negative. I can hook up the + to a +12 source. Then I was thinking that maybe I could tap into the door lock/unlock wires to provide me with the (-) side for the siren. So when the module sends the (-) signal for the door locks it would also send the (-) to the siren. This would in theory create a chirp. Would this work? How about tapping into the horn? It is a valient keyless entry system and a 99 grand am.
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Dyer
Replies:
Posted By: AlarmTech
Date Posted: April 20, 2003 at 8:04 PM
Yes, you can use the doorlock outputs to trigger a relay to chirp the siren. I would suggest, first to diode isolate the doorlock output wires from 2 wires, split into 4. 2 go to the doorlock wires, 2 go to a relay for the siren. I would ground the siren at it's mounting point ans send a 12v+ pulse to it.
86 = (-) from lock/unlock
85 = 12v+ (see 87)
87a = not used
87 = 12v+ 5amp fused with 85
30 = 12v+ to the siren
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Viper Equipped
Posted By: dyer
Date Posted: April 22, 2003 at 7:05 PM
do I need 2 relays? One for lock and one for unlock?
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Dyer
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