Disabling factory 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=34216
Printed Date: July 20, 2025 at 8:49 PM

Topic: Disabling factory alarm

Posted By: spokman
Subject: Disabling factory alarm
Date Posted: June 19, 2004 at 9:44 PM

I'm installing an alarm system in my 95 Ford Explorer and am wondering if it's neccesary or desirable to disable the factory alarm? If so what are some of the ways this might be gone about? I believe there is a wire I can tap into that will disable it but I'm not sure if it should have a pulsed type input or just be permanently grounded, depending on the polarity. I'm also wondering if the factory unit can be programmaticly disabled?

Any ideas or help is appreciated!

Replies:

Posted By: tjdurham
Date Posted: June 20, 2004 at 12:37 AM

no programicaly dis but there will be several green\purple wires in your drivers door sill harness one of them will test ground when you unlock the drivers door with the key just hook your alarms disarm wire to this wire and it will disarm the alarm whenever unlocking or remote starting

if its an alarm only just use 2 diodes on the unlock wire (stripe facing your new alarm )and hook 1 to unlock in car and 1 to green\purple

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tj

Posted By: Teamrf
Date Posted: June 20, 2004 at 12:38 AM

You usually don't have to disarm factory alarms to add a new one.

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~The Rookie~
Rookie of the year that is...
Don't let the smoke out of your equiptment..it doesn't go back in.

Posted By: spokman
Date Posted: June 20, 2004 at 9:32 AM

Thanks for the help all!

Posted By: tjdurham
Date Posted: June 20, 2004 at 4:32 PM

if you lock the door with the door open and use the door lock switch it will arm the factory alarm on those explorers and you will look like a fool until you stick the key in one of the doors or trunk

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tj

Posted By: spokman
Date Posted: June 20, 2004 at 8:38 PM

Thanks TJ. That's what I was thinking to. I found the wire that supposedly disables the alarm. My alarm doesn't have a disable wire but it has three Aux outputs and a couple of others. Think I'll set it to disarm whenever I open or close the car. A lot of those wires have almost the same color scheme. Going to have to test them.