alarm led wire extension, 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=130732
Printed Date: June 10, 2024 at 9:38 AM
Topic: alarm led wire extension, relay?
Posted By: aznriced
Subject: alarm led wire extension, relay?
Date Posted: February 24, 2012 at 10:13 PM
Hey,
I just cut the wires on the LED that comes out of the alarm brain to extend it, but realized by the time the votage gets to the LED, its only @ around 1 volt or so which is not enough to power the LED.
I am wondering if i get a relay, would this work and fully power the LED? If it can i will add another LED too.
This is the wiring diagram that i quickly made up in paint.
Would there be any problem?
Thanks. 
Replies:
Posted By: tedmond
Date Posted: February 24, 2012 at 10:31 PM
you shouldn't need a relay for an LED. doesn't matter how long the wire is, its such a short fraction of time you wouldn't even notice.
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Ted
2nd Year Tier 1 Medical School
Still installing as a hobby...pays for groceries
Compustar Expert
Posted By: itsyuk
Date Posted: February 24, 2012 at 10:48 PM
the LED doesnt run on 12 volts.
if you measure the voltage where you spliced the wire to your old wire you will find its pretty much exactly the same as the new ends. ------------- yuk
quiet rural missouri, near KC.
If your system moves you physically and not emotionally, you have wasted your money.
Posted By: aznriced
Date Posted: February 24, 2012 at 11:09 PM
Ok, just realized i have blown the LED that came with the alarm.
Also i might have shorted the wire for the LED that's coming out of the alarm because the voltage goes from 3 volt, 7 volt, 10 volt etc. Not sure if it's supposed to be like that.
I have a LED with resistor ready for 12 volts, if i tap this in, do you guys think it would work?
Seems like the last choice is to use the alarm's armed out - wire with a blinking led.
Posted By: itsyuk
Date Posted: February 24, 2012 at 11:17 PM
you probably need to buy a new alarm LED that will plug into your unit and see if your LED driver still works. they are cheap on ebay. or get one faster from a local shop.
if you have a friend with an extra, maybe they can let you plug it in just to see what you have.
if it dont work, then you are correct about possibly having to use the GWA wire.
using the GWA wire will not let you have the diagnostics that the regular LED gives when the system is triggered. it also makes programming features more difficult.
what brand/model is your alarm? ------------- yuk
quiet rural missouri, near KC.
If your system moves you physically and not emotionally, you have wasted your money.
Posted By: tedmond
Date Posted: February 24, 2012 at 11:17 PM
leds are 3.3v some are 12v but rare.
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Ted
2nd Year Tier 1 Medical School
Still installing as a hobby...pays for groceries
Compustar Expert
Posted By: itsyuk
Date Posted: February 24, 2012 at 11:20 PM
if the driver is blown. varad used to (maybe still does) make a driver/flasher box connected to a hyper bright LED that was made to run from a GWA wire.
------------- yuk
quiet rural missouri, near KC.
If your system moves you physically and not emotionally, you have wasted your money.
Posted By: howie ll
Date Posted: February 24, 2012 at 11:50 PM
I suppose we all have to learn somehow but any one ever think to test?
Nearly all current alarm LEDs run off a 2.5-4V diode ref 12v+ via 4-800R.
I always use a super high output blue LED to replace DEI, absolutely perfect.
-------------
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: aznriced
Date Posted: February 25, 2012 at 12:28 AM
Yea, i blew the original LED lol. Tested it with a DVOM.
If the alarm's LED driver still works, can i just connect a working LED directly to it? or would i need a resistor with it?
Posted By: itsyuk
Date Posted: February 25, 2012 at 12:56 AM
you may not get the brightness you need from just any old LED....
taking Howie's advice as long as you dont have a problem with blue would be a good idea.
maybe he will post you a link to exactly the one he is recommending.
------------- yuk
quiet rural missouri, near KC.
If your system moves you physically and not emotionally, you have wasted your money.
Posted By: howie ll
Date Posted: February 25, 2012 at 2:39 AM
Mine either come from a UK retail outlet or from RS components, try the US equivalents, Mouser and Farnel, you're simply looking at Optoelectronics, 5mm dia Blue (or any other colour) LED, f/voltage 3V.
-------------
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: itsyuk
Date Posted: February 25, 2012 at 3:17 AM
here is more of what i was thinkin....
to make it simpler.
https://www./itm/Blue-Alarm-LED-light-BRIGHT-Viper-Python-Clifford-NEW-/120598909352?pt=Car_Audio_Video&vxp=mtr&hash=item1c144151a8 ------------- yuk
quiet rural missouri, near KC.
If your system moves you physically and not emotionally, you have wasted your money.
Posted By: aznriced
Date Posted: February 25, 2012 at 3:17 PM
Link doesn't work.
Just blew another LED. Going to give up using the dedicated LED output from the alarm brain.
Going to order blinking LEDs and resistors from ebay and wire it with GWA wire lol.
Posted By: itsyuk
Date Posted: February 25, 2012 at 3:21 PM
was it a regular car alarm led ? Like a dei?
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yuk
quiet rural missouri, near KC.
If your system moves you physically and not emotionally, you have wasted your money.
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