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second siren on viper alarm

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=115900
Printed Date: May 09, 2024 at 5:59 PM


Topic: second siren on viper alarm

Posted By: osaenz
Subject: second siren on viper alarm
Date Posted: August 25, 2009 at 6:25 AM

How do I add second siren to car alarm?  I heard I may need a relay? 




Replies:

Posted By: traviscoots
Date Posted: August 25, 2009 at 7:15 AM

you can use a positive to positive relay,

87 to 12 volt, and fuse it with a 5 amp

85 to ground

86 is your input from your alarm and

30 will be the output to both sirens.



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possibilities are limitless. if you can think it you can do it.




Posted By: i am an idiot
Date Posted: August 25, 2009 at 7:27 AM

In the following diagram the wire labeled remote turn on lead is the siren output wire that comes from your alarm.  The wires labeled fan are where you connect your sirens.

Connecting Additional Devices to the Remote Turn On Wire (link)
Using a 30 amp SPDT relay, connect terminal #87 to constant 12 volts positive with a fuse rated to the sum of the additional accessories you've added and the components you need to turn on. (If you have two fans rated at 5 amps each and a neon light rated at 10 amps, you would use a 20 amp fuse plus 200 ma for each amplifier and processor.) Connect terminal #85 to ground, terminal #86 to the remote turn on wire from the head unit, and terminal #30 to each accessory with an appropriate fuse. A fuse (not shown) could also be used between the output of the relay (#30) and the remote turn on wire of the amplifiers and/or processors for extra precaution.
 
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Let's Go Brandon Brown. Congratulations on your first Xfinity Series Win. LGBFJB




Posted By: osaenz
Date Posted: August 25, 2009 at 9:05 AM

Thanks sounds pretty easy.






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