convert solid to pulsed ?
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=129665
Printed Date: July 17, 2025 at 9:20 PM
Topic: convert solid to pulsed ?
Posted By: vegeta_ss4
Subject: convert solid to pulsed ?
Date Posted: December 12, 2011 at 1:29 PM
Hello Gang I can not find a answer after searching so I figured I would go ahead and ask.
I have a 01 Nissan Frontier with aftermarket power locks and a Scytek 7t7 alarm installed. I need a way to convert a solid (-) signal from the alarm to a pulsed (-) signal to lock my doors. I had a mishap and shorted the power lock relays that came in the Scytek 7t7.Now I'm using the blue/white (-)500mA passenger unlock output to unlock both doors. And I'm trying to figure a way to use the orange (-)500mA armed output to lock. But it a solid output and not a pulsed. Any help would be GREATLY appreciated!
Replies:
Posted By: jdbtsi
Date Posted: December 12, 2011 at 2:32 PM
Are you looking for something like this?
https://www.the12volt.com/relays/relaydiagram43.html
Posted By: vegeta_ss4
Date Posted: December 12, 2011 at 3:02 PM
jdbtsi wrote:
Are you looking for something like this?
https://www.the12volt.com/relays/relaydiagram43.html
Thanks man. I saw thats but was not 100% sure thats the right setup I need for my situation . Would just like an expert to confirm or deny it for me. That would be great!
Posted By: howie ll
Date Posted: December 12, 2011 at 4:03 PM
Yes.
------------- Amateurs assume, don't test and have problems; pros test first. I am not a free install service.
Read the installation manual, do a search here or online for your vehicle wiring before posting.
Posted By: vegeta_ss4
Date Posted: December 12, 2011 at 5:32 PM
howie ll wrote:
Yes.
GREAT ! Thanx Howie 11 ! Now I just need to find where to get the correct resistor and capacitor. Already have a relay.
Posted By: vegeta_ss4
Date Posted: December 12, 2011 at 5:35 PM
Howie 11 ' Would Rat Shack have the capacitor and the resister you think? Or do I need to order from a specialty store? Thanx again
Posted By: howie ll
Date Posted: December 12, 2011 at 11:45 PM
HTF would I know? I'm over 3000 miles from the nearest.
Look at where I live (unfortunately).
If you're anywhere Dade or Broward you have dozens of specialised electronics/electrical places to chose from.
------------- Amateurs assume, don't test and have problems; pros test first. I am not a free install service.
Read the installation manual, do a search here or online for your vehicle wiring before posting.
Posted By: tedmond
Date Posted: December 13, 2011 at 12:38 AM
lol to Howie's Post.
anyways, doesn't this unit have a factory alarm arm or disarm wire? if it does you can use that instead of the lock/unlock wires.
if the unit does not have the option, use your Horn output, and set the unit to only pulse when you double lock. Connect to your lock wire.
------------- Ted
2nd Year Tier 1 Medical School
Still installing as a hobby...pays for groceries
Compustar Expert
Posted By: KPierson
Date Posted: December 13, 2011 at 5:26 AM
Have you tried to repair the damaged unit? If you messed up the relay wiring and fried the relay(s) more then likely it is just burnt traces. These are easy enough for anyone to fix as long as you have a soldering iron (which you should have if you are installing this alarm).
I would look to repair the unit before going through all this trouble to come up with a work around.
------------- Kevin Pierson
Posted By: howie ll
Date Posted: December 13, 2011 at 5:57 AM
And even then you are going to have a pair of neg. tracks that activate the onboard relays.
------------- Amateurs assume, don't test and have problems; pros test first. I am not a free install service.
Read the installation manual, do a search here or online for your vehicle wiring before posting.
Posted By: vegeta_ss4
Date Posted: December 13, 2011 at 8:04 AM
howie ll wrote:
HTF would I know? I'm over 3000 miles from the nearest.
Look at where I live (unfortunately).
If you're anywhere Dade or Broward you have dozens of specialised electronics/electrical places to chose from.
LOL ! Sorry bout that I did not see where you are. My fault ! Thanks anyway for all your help!
Posted By: howie ll
Date Posted: December 13, 2011 at 8:11 AM
Don't worry vegeta, we aren't quite a backwoods yet, I can still send emails and photos from my phone and yes we've heard of Google out in the sticks!
I was just being silly.
 ------------- Amateurs assume, don't test and have problems; pros test first. I am not a free install service.
Read the installation manual, do a search here or online for your vehicle wiring before posting.
Posted By: vegeta_ss4
Date Posted: December 13, 2011 at 8:17 AM
tedmond wrote:
lol to Howie's Post.
anyways, doesn't this unit have a factory alarm arm or disarm wire? if it does you can use that instead of the lock/unlock wires.
if the unit does not have the option, use your Horn output, and set the unit to only pulse when you double lock. Connect to your lock wire.
Thanx for your help Tedmond! It have a disarm wire but no arm other then the rely ones a messed up. But it does have the horn wire. But won't it send a (-) signal both when I arm arm disarm. and there for try to lock the doors with the horn wire and unlock the doors with the (-) disarm wire at the same time when I disarm the car ? Or am I missing something ?
Posted By: howie ll
Date Posted: December 13, 2011 at 8:20 AM
What Ted was saying is that a single horn pulse on arm will lock the vehicle, double on disarm will unlock without the lock side being affected.
------------- Amateurs assume, don't test and have problems; pros test first. I am not a free install service.
Read the installation manual, do a search here or online for your vehicle wiring before posting.
Posted By: vegeta_ss4
Date Posted: December 13, 2011 at 8:57 AM
howie ll wrote:
What Ted was saying is that a single horn pulse on arm will lock the vehicle, double on disarm will unlock without the lock side being affected.
Ok I got ya to a point. But how would I wire that?
Posted By: vegeta_ss4
Date Posted: December 13, 2011 at 9:02 AM
For anyone not familiar with this system here is a link to the manual if it would help.
https://autoalarmspecialists.com/files/product_astra_security_7T7_manual.pdf
Posted By: vegeta_ss4
Date Posted: December 13, 2011 at 9:13 AM
KPierson wrote:
Have you tried to repair the damaged unit? If you messed up the relay wiring and fried the relay(s) more then likely it is just burnt traces. These are easy enough for anyone to fix as long as you have a soldering iron (which you should have if you are installing this alarm).
I would look to repair the unit before going through all this trouble to come up with a work around.
Ok I think I can handle that for sure. The traces are basically the connection between the relay point right?
Posted By: howie ll
Date Posted: December 13, 2011 at 9:15 AM
Yes
------------- Amateurs assume, don't test and have problems; pros test first. I am not a free install service.
Read the installation manual, do a search here or online for your vehicle wiring before posting.
Posted By: vegeta_ss4
Date Posted: December 13, 2011 at 11:11 AM
howie ll wrote:
Yes
thanks Howie
Posted By: tedmond
Date Posted: December 13, 2011 at 4:33 PM
just connect horn output from unit to the car's lock wire.
and use the unlock to the unlock wire on the car. No tricks, just simple connections.
------------- Ted
2nd Year Tier 1 Medical School
Still installing as a hobby...pays for groceries
Compustar Expert
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