Locking but not Unlocking....Please Help
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=19696
Printed Date: July 04, 2025 at 9:41 PM
Topic: Locking but not Unlocking....Please Help
Posted By: appstate11
Subject: Locking but not Unlocking....Please Help
Date Posted: October 05, 2003 at 10:10 PM
Installing a alarm in a 89 Ford Probe. It has power locks already and my alarm has built in relays for the door locks the problem is I can get them to lock but not unlock. Looked behind the switch and it shows 2 wires green and black for lock and white and green for unlock however the diagram on this site says green and black for both lock and unlock. tried everything even hooked into the grren and white unlock wire but they will not unlock. my alarm has a blue/white for lock and grren/white for unlock. also had BROWN / blue and BROWN / green and also ORANGE / blue and orange /green. tried every combination you can think with hook these wires to ground and 12v. please help
Replies:
Posted By: JWorm
Date Posted: October 05, 2003 at 10:18 PM
ahh, the old Probe 1-wire locking system.
FORD, PROBE, 1989, Power Lock - GREEN/ black, drivers kick panel
Lock requires a positive trigger. Unlock requires a positive trigger through a 4,700 ohm resistor. Must use relays for both lock and unlock.
Posted By: sroth140
Date Posted: October 05, 2003 at 10:28 PM
damn that resistor
Posted By: italnpimp59
Date Posted: October 05, 2003 at 11:05 PM
yeah the onewire lock/unlock systems are great! another one to look out for is the 2002-2003 dogde ram!
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Posted By: padawan
Date Posted: October 06, 2003 at 8:29 AM
Try This:
Get 2 relays
on both relays, 85 and 87 get 12V
86 gets (-) lock output from alarm on relay #1
86 gets (-) unlock output from alarm on relay #2
30 on relay #1 goes to GREEN/ Black wire in Probe
Take 4.7k ohm resistor and go from 30 on relay #2 to GREEN/ Black wire.
87A not used.
Posted By: floaterr
Date Posted: October 06, 2003 at 8:29 AM
ROFLOL! I know, who invented that dang system anyway!? Like the new dodges and their lights. Whats wrong with good ol' neg/pos triggers?
Posted By: appstate11
Date Posted: October 06, 2003 at 11:21 AM
Will it still work if i use 2 realys with a resistor even though my alarm has door lock relays built in to it?
Posted By: padawan
Date Posted: October 06, 2003 at 1:24 PM
If your alarm has onboard relays, just hook it up the same way as external relays, same thing man.
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