ignition controlled door locks
Printed From: the12volt.com
Forum Name: Relays
Forum Discription: Relay Diagrams, SPDT Relays, SPST Relays, DPDT Relays, Latching Relays, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=19991
Printed Date: May 10, 2024 at 3:17 PM
Topic: ignition controlled door locks
Posted By: 1nicemustang
Subject: ignition controlled door locks
Date Posted: October 12, 2003 at 11:22 AM
hey everyone..i have a 2001 mustang with keyless entry as well as a system 4 ford alarm installed......id like to possibly hook up ignition controlled door locks.....any of you smart electrical wizards be able to help out?
Replies:
Posted By: NSGrimace
Date Posted: October 24, 2003 at 9:45 PM
It sounds like the easiest route for you would be to use DEI's 452T door lock pulse generator. This will allow you to create a pulsed output(lock/unlock) from a latched input(Ignition).
Try this link:
https://www.radiomancaraudio.com/detail.asp?PRODUCT_ID=DE452T
Hope this works for you.
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Posted By: 1nicemustang
Date Posted: October 25, 2003 at 6:13 AM
ok lets try the hook up on this........
i would use the hot at ignition only wire as the trigger.
wire the outputs lock/unlock to the existing keyless entry.
and maybe a ground wire from the module.
now....i have factory keyless entry.......i have a ford series 4 alarm that also operates the keyless entry as well as locking/arming etc.
will integrating the dei 452t cause a problem or feedback into the system any?
if not you seem to have found the problem solver for me then.
Let me know your thoughts on this.
Posted By: NSGrimace
Date Posted: October 25, 2003 at 11:41 AM
I am not 100% percent sure of the wiring characteristics of the module, but what i can see from sales adds it looks like you might need 2 of them to complete the project along with a SPDT Automotive relay. The schematic below shows the basic idea of how it should work, granted my assumptions on the 452T are correct. If you can find an installation manual for the module I will be able to give a definate answer.
** Note - The modules on the schematic do not have all wiring info included  -------------
Posted By: idiesel
Date Posted: October 25, 2003 at 1:39 PM
Most vehicles have a key present switch, using a l.e.d. test light ("mac tools" or "Snap-on" has a nice 6,12,24v about $40.00 cdn. which is safe for testing computer circuits) it will tell green (-) or red (+) use that wire to trigger your relay for ign. triggered door locks. ------------- idiesel
Posted By: NowYaKnow
Date Posted: October 25, 2003 at 1:41 PM
Have your checked your alarms owners manual to see if ignition controlled locks is an option? I would think it is in that case you just have to turn it on..I would look into this before doing any wiring..
Mike
Posted By: 1nicemustang
Date Posted: October 25, 2003 at 2:01 PM
nope just a factory keyless system 4 with siren, dual shock sensor, and igniton cut off.
this was going to be a winter project just to see if id be able to pull it off or not. but the above example makes sense to me. they modules only cost 7 bucks so i can purchase one and see what the wiring says on it.
DEI used to have their schematics online till they got smart and realized that car theives had computers also.
Posted By: deadguido
Date Posted: October 29, 2003 at 1:41 AM
1nicemustang wrote:
DEI used to have their schematics online till they got smart and realized that car theives had computers also.
Security through obscurity is not smart, all this does is make it harder for an amateur to install it themselves
Posted By: 1nicemustang
Date Posted: October 29, 2003 at 3:00 PM
well really isnt that the whole idea is so that the amateur installer does not learn this trade? therefore giving more money to install shops as well as schools that teach the practic of 12volt electronics.
plus...........i dont know of one shop in my area that would ever sell me a viper alarm if i wanted to install it myself.
Posted By: deadguido
Date Posted: October 29, 2003 at 10:46 PM
1nicemustang wrote:
well really isnt that the whole idea is so that the amateur installer does not learn this trade? therefore giving more money to install shops as well as schools that teach the practic of 12volt electronics.
Thats my point, it has nothing to do with security
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