factory alarm disable assistance
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=134378
Printed Date: July 17, 2025 at 6:43 AM
Topic: factory alarm disable assistance
Posted By: cas0586
Subject: factory alarm disable assistance
Date Posted: June 14, 2013 at 7:05 PM
I purchased a Remote Start/Keyless Entry for my vehicle.
I have a basic understanding of the install except disarming the factory alarm. All the information I can find about disarming factory alarm is very vague. They all say Factory Alarm Disable LT GREEN, located under rear seat next to battery.
Unfortunately there about 100 wires under there in a loom and maybe 15 of them LT GREEN.
I looked at the RFA Module Pinout(controls keyless entry, RAP, etc.). There are two inputs to it with LT. GREEN wires. One is the front and rear door lock cylinder switches and one is for key sensing. Both switch ground.
So, my question the key sense wire would be the one I want to ground when remote starting to prevent alarm correct? Does it need to see ground when remote starting only or see ground at all times? Or maybe I am on the wrong track altogether. First install BTW.
Thanks for any insight.
Replies:
Posted By: cas0586
Date Posted: June 14, 2013 at 7:06 PM
1998 Oldsmobile Aurora.
Posted By: Mike M2
Date Posted: June 16, 2013 at 8:57 PM
Usually the factory disarm wire is the drivers door key cylinder unlock wire. Turning the cylinder to unlock provides a negative pulse to disarm.
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Mike M2
Tech Manager
CS Dealer Services
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