Problem with +12 siren output on brain

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=3587
Printed Date: May 20, 2024 at 6:30 AM

Topic: Problem with +12 siren output on brain

Posted By: j84buick
Subject: Problem with +12 siren output on brain
Date Posted: September 13, 2002 at 9:11 AM

Hi there, new to the forum.

My Alarm System: Carbine 500

Well, I reinstalled my alarm the other day because I replaced my dash and I never really hid all the install wires as well as I should have. Anyways I hooked back up all my wires after re-routing them and everything was great except for one thing.

Previously I had my main siren and 1 interior siren plus a strobe light. I am pretty sure that the strobe light and interior siren were powered from a relay that was wired into the +12 siren output on the brain. Well for some reason now the +12 lead on the brain is flaky. I have tried a bunch of combinations of this but right now that +12 lead goes to my relay which in turn powers the 2 sirens. The strobe is no longer installed. What happens is that when I trigger the alarm the lights flash but the relay is not clicking. I messed with the relay while the alarm was triggered and all of a sudden the sirens went off. I replaced the relay and the same thing happens although I can't get the sirens to sound by tapping the relay.

This happens like 1 out of every 6 times I trigger the alarm. Judging by the OHM meter when it happens the +12 lead is not sending any signal at all. I am not sure if this happened before my re-wire since I really did not test the alarm in the last few years.

Any advice?

Replies:

Posted By: chasesaccessori
Date Posted: September 13, 2002 at 10:47 AM

I've installed so many alarms that i can't even tell you. The only time you would have a problem such as yours is when you don't have a good ground. Check and redo your ground on both your alarm and siren. The only proper ground is to run directly to the batt. The same goes for power. I am unfamilur with Carbine 500 alarm. If it is some cheep pos, than I would just get a new alarm, they are pretty inexpensive now a days.

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(owner/installer)
Chase's Accessories
Ridgecrest, CA
in business since 92

Posted By: soundinstaller
Date Posted: September 13, 2002 at 2:38 PM

I ground is a possibility.

ALso, since it is a reinstall, you may have a bad solder joint on the alarm's circuit board where the siren + pin makes contact.

This often happens on the cheap pos alarms.

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The Sound Installer

Posted By: j84buick
Date Posted: September 13, 2002 at 4:36 PM

posted_image I am unsure how it can be a ground issue because the brain is clicking away with the internal parking light flasher and everything else in the alarm is working.

I am new to this board, is it common for everyone to call your hardware pos? I did not get some circuit city $59 install this was from a higher end stereo/alarm shop that ran me $350 to install a couple years ago. Not that the price of the install=the quality but man. The alarm may not be a Viper or a Clifford but geez take it easy.

-Jim