indentify 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=127096
Printed Date: July 06, 2025 at 11:17 AM
Topic: indentify alarm
Posted By: tendertendon
Subject: indentify alarm
Date Posted: April 24, 2011 at 9:22 PM
Hello,
I just purchased a 2002 Galant for my daughter that has an aftermarket alarm/remote starter installed. It is acting erratically (alarm goes off while driving) and I would like to repair or remove. I can't find any names or numbers on the alarm. There is also a 555U bypass installed. Can anyone identify the alarm so I can find the installation and operating manuals? Thanks!
Replies:
Posted By: tendertendon
Date Posted: April 24, 2011 at 9:25 PM
One more pic...
Posted By: i am an idiot
Date Posted: April 24, 2011 at 9:56 PM
I can not help you identify your system, but I can tell you a couple things you can check that may be causing it to go off while driving. First is the fact that when an alarm loses constant power and it is reaquainted with power it will go off. Also check the ignition input voltage as well. With ignition power the alarm will not go off. The constant wire should be Red in color, and the ignition wire will be yellow in color.
Posted By: howie ll
Date Posted: April 25, 2011 at 2:18 AM
Apart from the main feed (red) and ignition (yellow but test) I would look at the black ground cable and make sure that's a good connection.
-------------
Amateurs assume, don't test and have problems; pros test first. I am not a free install service.
Read the installation manual, do a search here or online for your vehicle wiring before posting.
Posted By: lectricguy
Date Posted: April 25, 2011 at 5:45 AM
I fully agree with Mr. I and Howie on verifying power, ignition, and ground connections.
As far as identifying the unit, you may want to look at the remote fob. It should have an FCC ID stamped or labeled on it. The characters in the ID identify the grantee(usually the manufacturer) and the product. Once you know this info, you can look online for the install and owner's manuals.
Here is the link:
https://www.fcc.gov/oet/ea/fccid/ ------------- Lectric Guy
Posted By: tendertendon
Date Posted: April 25, 2011 at 10:53 AM
Thanks for the replies guys. I already checked all of the splices. They were all very good solder joints. I replaced the fuses, just in case one had an intermittent break. The problem still happens, so often that I had to disconnect the siren. The FCC ID on the remotes came up empty on the FCC website, but it did lead me to replacement remotes which specified which alarms they work with. I finally identified it as a Viking VS3425 or similar re-brand. It was easy to find the install/operating manual. If I can't find the problem soon, I'm ripping it out...
Posted By: lectricguy
Date Posted: April 26, 2011 at 5:29 AM
tendertendon-
Megatronix does not have great documentation...there are alarm diagnostics that may help.
Once the alarm has triggered, disarm it with the remote. Now look at the alarm LED mounted in the car. This provides the alarm trigger diagnostics.
|
2 flashes... pause |
Zone 2: Trigger on Trunk/Hood |
|
3 flashes... pause |
Zone 3: Trigger on Door Switch |
|
4 flashes... pause |
Zone 4: Trigger on Shock Sensor |
|
5 flashes... pause |
Zone 5: Trigger on Ignition Switch |
The system will continue to display the cause until you turn the ignition on.
Once you identify the trigger source, you can debug the alarm using the install guide to trace the appropriate wire to find the faulty connection. ------------- Lectric Guy
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