Door lock 2003 PT cruiser

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=83337
Printed Date: September 10, 2025 at 4:08 PM

Topic: Door lock 2003 PT cruiser

Posted By: evnldr_gt
Subject: Door lock 2003 PT cruiser
Date Posted: September 25, 2006 at 7:32 PM

i have a 2003 PT cruiser GT

I have the 7.2K and 3K resistors .. i have been working on this for a day... i have tried it with and without a DEI relay pack 451 i think..

anybody have a lay out of how this works ... i am pulling my hair out here... i have the resistors dioded as in the posted_image

Replies:

Posted By: captainzab
Date Posted: September 25, 2006 at 10:04 PM

You need the 451m. (or 2 relays)

Because 200ma is not enough, you need a full amperage.

Try the 451m again.
Purp (fused) wire- ground
GREEN/ black- lock output through proper resistor
Blue/Black- unlock output through proper resistor

https://64.85.6.129/extrainfo/diagrams/4623_PT-CRUISER_CHRYSLER%20PT%20CRUISER%201%20WIRE%20JBS%20UNITS.pdf

NOTE *1 This vehicle uses a 1-Wire Door Locking System, LOCK requires a (-)Negative thru a 3000 Ohm Resistor and UNLOCK, requires a (-)Negative thru a 7200 Ohm Resistor, and requires a DOUBLE PULSE to UNLOCK. Some unit also require 2 extra relays Part #775, to connect, See DIAGRAM

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Note: You Always Dont Get What You Pay For.

Posted By: evnldr_gt
Date Posted: September 25, 2006 at 10:40 PM

So nothing on the 451 is connected but the purple? no power?

Posted By: captainzab
Date Posted: September 25, 2006 at 10:49 PM

captainzab wrote:

Try the 451m again.
Purp (fused) wire- ground
GREEN/ black- lock output through proper resistor
Blue/Black- unlock output through proper resistor

plug the 3pin harness into the alarm brain.
The other wires on the 451m. u only need 3 wires
purp (input)
GREEN/ black lock output
blue/black unlock output

Cut and tape the brown and white wire. (not used)

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Note: You Always Dont Get What You Pay For.

Posted By: evnldr_gt
Date Posted: September 26, 2006 at 6:33 PM

WHOO HOOO

Worked Im sure somebody else will find this usefull because i for the life of me could not find the 451M wire guid for this..

Posted By: nipplz
Date Posted: September 26, 2006 at 10:59 PM

i have always had good luck with using the standard voltage out of the brain but i lower the resistance of the resistors. the module has a small amount of resistance. and i never use diodes except on the 06 hyundia tiberon with their goofy set up.