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2002 f1 50 disarm wire?

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=101099
Printed Date: July 16, 2025 at 8:24 AM


Topic: 2002 f1 50 disarm wire?

Posted By: mjs281
Subject: 2002 f1 50 disarm wire?
Date Posted: January 12, 2008 at 9:26 PM

I have a 2002 F-150 with factory keyless entry.  I'm trying to install an add-on remote start (Crimestopper RS1300 DPII).  I want to find all wires prior to doing the installation.  I believe I have found them all, EXCEPT for the OEM disarm wire (dark GREEN/ purple.)  I spent several hours looking in the kick panel, under the dash, in the door and either it's not there, or I just haven't looked in the right spot yet.  Since I have keyless entry, I'm assuming I have the OEM disarm wire, right?  Please let me know if I have this wire, and if so where is it?  If anyone can send me a picture it would be much appreciated.  Thanks!



Replies:

Posted By: BNLUIS
Date Posted: January 12, 2008 at 9:40 PM
I don't think that car has a factory alarm at all. It's just a keyless entry no need to connect that wire. Test to see if you have Factory alarm, lock the car from the remote, with window roll down , wat a minute reach in and open door bu pulling handle, if you hear no horn means no alarm.posted_image

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Luis
Sound Waves
Is up to the installer to test all wires with a DMM whenever possible.




Posted By: Twelvoltz
Date Posted: January 13, 2008 at 8:00 AM
As Bnluis has stated it is very possible that you have factory keyless without a factory alarm. You also need to check to see if you have to interface with the GEM to 'wake' it up. As suggested already, test for your alarm...but before you continue I would suggest testing to see if you need to wakeup the GEM. With the door open and the window rolled down, press lock on the door panel and close the door. Wait 30 seconds then reach in the door and press unlock on the switch if the door unlocks you do not need to interface it, if it does nothing you need to interface it.

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Installer, IT support, and FFL. I need less hobbies.




Posted By: mjs281
Date Posted: January 13, 2008 at 8:55 PM

Thanks for the replies.  I did a test to see if I have a factory alarm like Bnluis suggested and there is no horn blaring after locking the doors, waiting 1 minute, then opening the door through the window so I do NOT have a factory alarm, strictly keyless entry.  Thanks Bnluis.

Now that I'm past that, I proceeded to hook up all the wires today.  Unfortunatley, I do not have success yet.  The remote start is supposed to start after 3 consecutive (-) pulses.  I hit Lock 3 times on the key fob and nothing happens with the remote start.  If I sit in the truck and hit lock on the driver's door 3 times, it cranks, but doesn't start.  Any ideas on either of these symptoms? 





Posted By: BNLUIS
Date Posted: January 14, 2008 at 10:31 AM

Did u use a bypass for the starter , Ibelieve you car is equipped withe a PATS key you will nee 2 keys to program a bypass. Where did you connect your wire of the starter for 3 consecutive pulses. I assume you connect it to the lock wire which gives you (-)  trigger. That wire only works with the lock switch inside the car , see if your remote starter gives you the option to connect it to a lock motor wire which gives you a (+) 12volt, if not you will need a relay. The lock motor wire on that car I think is Pink/Black

there are many types of bypasses  PKF1, 555F just a few

https://www.bypasskit.com/product.aspx?prodid=PKF1

https://www.bypasskit.com/product.aspx?prodid=555FW



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Luis
Sound Waves
Is up to the installer to test all wires with a DMM whenever possible.




Posted By: Chris Luongo
Date Posted: January 14, 2008 at 2:46 PM
Ok, so you have two separate problems.

1. Doesn't attempt to start with factory remote, but attempts to start when pressing lock button on door:

You're on the wrong wire. The pink / YELLOW doesn't do anything when you operate the factory remote.

You need to find the "lock motor" wire, which rests at ground, and is positive when you lock the doors.

If the remote starter was poorly designed and doesn't accept a positive trigger input, you can use a relay to convert the car's positive lock motor signal, to a negative signal for the remote starter.....the "relays" section of this site shows how.

2. Attempts to remote start, but won't:

What are you using for a transponder bypass?

When attempting to remote start, is the red THEFT light in the dash on steady, or flashing rapidly?

Will it successfully remote start if you unplug your bypass, and just leave a key in the ignition, in the off position?




Posted By: mjs281
Date Posted: January 14, 2008 at 8:26 PM

I tested for the GEM as Twelvoltz suggested and the door unlocks so I don't think I need to "wake up the GEM."

1.  It sounds like I need a relay for my factory remote to activate the remote starter as the Crimestopper unit requires three (-) pulses.  Apparently I assumed incorectly that since I have a negative trigger doorlock wiring that it's output is negative.  I'll pick up a relay tomorrow and put it in to convert the (+) from the lock wire to a (-). 

2. The bypass I'm using is Omega IB-F1.  If I put the key in the ignition, press lock on the door 3 times, it does start (and the theft light is solid with the key in the ignition.)  Without the key in the ignition, the "Theft" light on the dash is flashing while attempting to start.  I don't understand why the bypass is not working.  I hooked up the brown (negative ground when running) on the bypass to the yellow/black (neg. ignition output) on the remote start, Violet on the bypass has no connection (n/c), and the other 4 wires per the instructions of Type A bypass (ground, ignition, ECM-RX, and ECM-TX.)  I also programmed the bypass by turning the key to the "ON" position after wiring it.  Any ideas on why my bypass is not working? 





Posted By: BNLUIS
Date Posted: January 14, 2008 at 8:39 PM
Try connecting the brown wire to the Status output of the remote starter it will come on before ignition, see if it helps, then double check the rx and tx wires

-------------
Luis
Sound Waves
Is up to the installer to test all wires with a DMM whenever possible.




Posted By: Chris Luongo
Date Posted: January 15, 2008 at 9:44 AM
Unfortunately, I'm not familiar with Crimestopper wire colors, or the particular bypass you have.

But, every Ford bypass I've ever seen has required two good Ford keys to program..........are you sure yours doesn't have instructions that require you to perform a sequence with two existing keys?

But, at least you have it narrowed down to two small problems.

The remote start installation is good. You already know how to correct the activation issue. The only thing left really, is the bypass.......you're doing well so far!




Posted By: BNLUIS
Date Posted: January 15, 2008 at 9:48 AM

Chris Luongo wrote:

Unfortunately, I'm not familiar with Crimestopper wire colors, or the particular bypass you have.

But, every Ford bypass I've ever seen has required two good Ford keys to program..........are you sure yours doesn't have instructions that require you to perform a sequence with two existing keys?

But, at least you have it narrowed down to two small problems.

The remote start installation is good. You already know how to correct the activation issue. The only thing left really, is the bypass.......you're doing well so far!

Chris the bypass he is using is made by Omega the module bypass is the same as a bypasskits PKF1 simple to install and it only requires 1 key for programming.



-------------
Luis
Sound Waves
Is up to the installer to test all wires with a DMM whenever possible.




Posted By: mjs281
Date Posted: January 15, 2008 at 8:51 PM

Relay is installed to convert + to - (+ signal coming from lock motor pink/black) and the factory remote works!  Thanks for the help in solving this issue.

My bypass is still giving me problems.  I called Omega tech help today and they recommended I get the ignition signal directly from the ignition 1 wire and to put the ground right to the chasis....so I did.  They also confirmed the RX and TX wires that I tapped into.  They mentioned sometimes you can try to reverse the RX and TX wires (I tried this with no success.)  The only other wire is the (-) ignition signal coming from the remote start (yellow/black) that goes to the brown wire on the bypass.  They also confirmed that 1 key programs it.  I've done all the above, and the theft light won't go solid during remote start unless I have the key in the ignition (meaning my bypass is not working.)  This is the final piece of the puzzle for my remote start to work.  Please reply with any ideas on getting my bypass to work.  Thanks! 





Posted By: moonliter
Date Posted: January 15, 2008 at 10:06 PM
I assumed it is correctly connected. Try unplug the bypass module, and then plug the harness back in. Insert the ignition key and turn it to ON until the theft light goes off. Remove the key and immediately remote start the car and see it would start and stay running.




Posted By: mjs281
Date Posted: January 16, 2008 at 9:00 AM

I did your above described test twice.  Once with the RX and TX wires hooked up per the installation manual, and once reversed per the mfg. suggestion.  No luck getting the bypass to work.

How do I test to make sure the brown wire on the bypass (- ground when running) is getting the proper signal from the remote start module? 

Any other ideas on why the bypass is not working?





Posted By: BNLUIS
Date Posted: January 16, 2008 at 9:22 AM
mjs281 wrote:

I did your above described test twice.  Once with the RX and TX wires hooked up per the installation manual, and once reversed per the mfg. suggestion.  No luck getting the bypass to work.

How do I test to make sure the brown wire on the bypass (- ground when running) is getting the proper signal from the remote start module? 

Any other ideas on why the bypass is not working?


Ground the brown wire of the bypass , then hit the remote starter see if it works. If so the ground status of the rermote start is not the right timing or is not working as it should.



-------------
Luis
Sound Waves
Is up to the installer to test all wires with a DMM whenever possible.




Posted By: mjs281
Date Posted: January 16, 2008 at 8:00 PM

Tonight I grounded the brown wire on the bypass, re-programmed it, and still nothing.  I also swapped the RX and TX, re-programmed, and nothing.  I'm assuming that I received a bad bypass module.  I'm going to request a replacement and hopefully this solves my problems. 





Posted By: mjs281
Date Posted: January 20, 2008 at 1:46 PM
I got a new bypass and all is well with my remote starter.  Apparently the orignal bypass was bad.  I appreaciate all the replies to help me troubleshoot. the installation.  Thanks everyone!





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