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Single wire door locks on Mazda 626

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=141105
Printed Date: April 27, 2024 at 9:15 AM


Topic: Single wire door locks on Mazda 626

Posted By: mcnugget
Subject: Single wire door locks on Mazda 626
Date Posted: March 30, 2016 at 8:44 PM

I have a 1994 Mazda 626 ES V6 without keyless entry. It has 3 power door locks and the driver's door is operated by the key. The key switch has one wire that is always 12+, one wire that is always ground and one wire that is +12v lock, ground unlock and infinite resistance at rest.

I already added a 4th door lock actuator and wires it in so it fires with the rest of them. How do I get my Viper 5900 lock/unlock hooked up to this? If I give the third wire +12v the doors lock, if I give it ground, they unlock. There is a (+)Lock/(-)Unlock wire on the alarm but it doesn't work. I'm guessing it needs more current so I need a relay. I just don't know how to wire a relay for that.



Replies:

Posted By: kreg357
Date Posted: March 31, 2016 at 1:06 AM

Actually, you will need two relays.  Use the Vipers lock and unlock output.  Place a 1N4001 diode in each output wire, band
towards the Viper and connect these outputs to the wires shown in the diagram below.

posted_image



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Soldering is fun!




Posted By: mcnugget
Date Posted: March 31, 2016 at 4:10 PM
Thanks. I found a 5 pack of relays with pigtail sockets for $12.50 on amazon so I'll wire this up as soon as they come.




Posted By: mcnugget
Date Posted: April 05, 2016 at 8:55 PM
kreg357 wrote:

Actually, you will need two relays.  Use the Vipers lock and unlock output.  Place a 1N4001 diode in each output wire, band
towards the Viper and connect these outputs to the wires shown in the diagram below.


<IMG src="https://www.the12volt.com/installbay/uploads/275_locks.jpg">




The diodes go in the Viper lock/unlock wires or the purple and blue 'to actuator' lock/unlock wires?
Then the purple and blue 'to actuator' wires both go to my single wire from the door lock switch?




Posted By: kreg357
Date Posted: April 06, 2016 at 3:58 AM

The diodes are added into the Blue and Green (-) door locks output wires from the Viper.  See diagram below :

posted_image


Not sure how you have the added Drivers' door lock solenoid wired up but, see diagram below :

posted_image



-------------
Soldering is fun!




Posted By: mcnugget
Date Posted: April 06, 2016 at 7:53 AM
Thanks Kreg. I guess I was approaching this the hard way. Your diagram just drives my added door lock actuator and then the factory power locks do the rest, no changes needed. Got it.




Posted By: mcnugget
Date Posted: June 05, 2016 at 6:35 PM
Thanks, that works perfectly. I know it took me a long time to install, but the car is already 22 years old so no rush!





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