04 dodge ram, door lock interface

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=109424
Printed Date: May 07, 2024 at 11:50 AM

Topic: 04 dodge ram, door lock interface

Posted By: ceasar326
Subject: 04 dodge ram, door lock interface
Date Posted: December 02, 2008 at 9:41 PM

Im installing a Remote start on a Dodge Ram 04. I have the autopage 727lcd hooked up and working. My only problem is the bypass module for my door locks. Ive read about black and grey keys, I have the black key and did not need to bypass key transponder. The bypass im gonna use is IM03 from omega. https://www.xpressdownload.com/omega/default.aspx?catid=3. Ive read the installation guide but need more info on the TECH NOTES. My truck does not have factory alarm so im not sure what wire to use for the VIOLET/WHITE. If some one plz help me on this one, Thanks

Replies:

Posted By: omegamike
Date Posted: December 03, 2008 at 11:02 AM

Hi Caesar,

Actually, the IM03 isnot compaitble with your vehicle if it does not have the OEM alarm. Only the trucks with factory keyless/alarm are utilizing the data network for doorlock control. You'll have to do an old fashioned relay w/ resistors setup for your doorlocks. There's a VIOLET/GREEN wire in the driver's kick panel (harness going to door). It needs to see chassis ground through 2 different resistances for lock/unlock.

Lock: chassis ground through 820 ohms
Unlock: chassis ground through 330 ohms

Omega's DLR-U makes quick work of it. It's a doorlock interface with relays and 0-20K ohm variable resistors for just this type of application. Hope this helps.

Posted By: ceasar326
Date Posted: December 03, 2008 at 5:38 PM

Thanks for the info. Now I'm new on these resisters things. Can some one guide me on how to calculate with a DMM. Since this will be my first time dealing with resisters and will radio shack resisters work? Thanks

Posted By: omegamike
Date Posted: December 04, 2008 at 8:37 AM

Yeah, radio shack is the best place to get them. If your DMM isn't auto-ranging, set it to the 2K range (depending on the meter but this is most common). If radio shack doesn't have the exact values, you can get 2 resistors that add up to the desired value and connect them in series (end to end). Be sure to verify their values with your meter. Also, it's recommended to use relays for your ground signal through the resistors. Most alarms' negative doorlock outputs have a little impedance to them and can throw off your values. If you want it done right away, you'll definitely have to do relays and resistors. If you can wait a couple days, I strongly recommend ordering Omega's DLR-U. It shouldn't be more than $10.

Best of luck,
Mike