LED status from alarm to relay?

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=7977
Printed Date: May 06, 2025 at 9:19 PM

Topic: LED status from alarm to relay?

Posted By: demeanor
Subject: LED status from alarm to relay?
Date Posted: January 10, 2003 at 10:57 PM

hello everyone.

I searched the site to see if this has been asked...but no luck, so here it goes...

I need to hook up 6 LED's to a car, from the alarm status output. however...the current draw from these lights (whether in series and/or parallel consume more mA than the status light output gives out.

can i connect that output to a ralay to switch it from a constant 12V feed not related to the alarm module ?

the lights run off various voltages, i've already have their propper resistor running to them, i just wanted to know if the output of an alarm~status light is enough to run a relay, and would it run (turn the relay on and off) as the LED once did?

i was thinking a relay with 86 having a constant 12V feed, going to the "branching" of the LED wires from pin 30.

having the blk and red wires from the LED output turn the relay on and off. in theory sounds good...but will it work?

another question...someone in another post (Karl) mentioned the ability to turn on/of a latching relay with a single channel output...is it posible?

thanks

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It's better to ask a "STUPID" question...than to know a "STUPID" answer. :-)

Replies:

Posted By: demeanor
Date Posted: January 11, 2003 at 4:28 PM

is there an LED flasher (that the flash rate could be adjusted) readily available, or is that a radioshack-like kind of project?

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It's better to ask a "STUPID" question...than to know a "STUPID" answer. :-)

Posted By: auex
Date Posted: January 11, 2003 at 5:02 PM

For the relay using the led output for the alarm, it depends on what voltage the alarm puts out toward the led. If it is a 2V led then that is not enough voltage to activate the relay. I know on my alarm ( DEI ) it will support 5 led wired in series. DEI also has a led module that will set what type of flash setup you would like ( it comes with 5 led but I don't know how many it will support).

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Posted By: demeanor
Date Posted: January 12, 2003 at 3:36 AM

thanks auex. i guess i'll go to radioshack and make up a kit with a smaller relay. my alarm is by Omega.

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It's better to ask a "STUPID" question...than to know a "STUPID" answer. :-)