Multiple Sirens

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=109
Printed Date: May 12, 2025 at 5:03 AM

Topic: Multiple Sirens

Posted By: ogb1
Subject: Multiple Sirens
Date Posted: March 21, 2002 at 10:29 AM

I have my regular siren, and a battery backed up siren currently hooked up.... i want to add a couple piezo sirens to the interior but i was told my alarm couldnt handle more then 2 sirens. How do i put a relay in so i can add more sirens? and do i wire the sirens up in parrallel with the sirens i have now?

Replies:

Posted By: the12volt
Date Posted: March 21, 2002 at 1:48 PM

Hi ogb1, connect a lead to your alarm's siren output. if your alarm's siren output is (+) connect it to termianl #85 and connect #86 to ground. If the output is (-) connect it to terminal #85 and connect #86 to a constant 12V+ (fused).

Connect terminal #87 to constant 12V+ (fused) and connect terminal #30 to the positive leads of the other sirens you are adding. Connect their negative leads to ground. Leave all other siren connections as there are.

the12volt

Posted By: hot_shot_guy123
Date Posted: March 21, 2002 at 1:50 PM

Hi there, I was on here before and I had the same question. I have 2 external battery back-up sirens, three mini piezo sirens inside and a seperate battery just for my alarm. People helped me so I figure I might as well help too. The relay is easy to hook up to your alarm. First of all you have to know if your alarm has a positive or negative trigger.

RELAY

PIN 86 = trigger wire from siren output from brain (pos or neg depending on your alarm)

PIN 85 = Ground

PIN 87 = Constant 12V (make sure to fuse this wire)

PIN 30 = Hook up sirens to this pin