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#1 (permalink) Old 06-09-2004, 05:54 PM
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After my recent brush with vandalism, I want an alarm LED. I really don't want an alarm though, as I don't need it. I do however want a flashing LED so it look like I have an alarm. How do I go about wiring it so the light blinks when the car is double locked?

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#2 (permalink) Old 06-09-2004, 06:47 PM
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a relay and a blinking LED.
check with radio shack.

2008 128i Jetblack
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#3 (permalink) Old 06-09-2004, 07:46 PM
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yup, that should do it.

BTW, did they mess your stuff up? I could care less if someone jacks my deck (that can be easily replaced), my biggest fear is someone breaking a window, scratching up a door panel, tearing up my dash, etc.

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#4 (permalink) Old 06-09-2004, 08:51 PM
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I agree with jllphan.....
I put a Viper 791xv two way alarm/start combo on my '00 528i, that wasnt fun at all.
A number of companies have flashing hyper leds that are a simple 3 wire hook up, constant 12+, ground, and a trigger wire (needs ground to make it flash). The trigger wire can go to an ignition 12+ source as it "rests" at ground when you shut off the car causing the led to flash. One company comes to mind instantly is VARAD. http://www.varad.com/products/products-index.html look under quicklinks/ alarm leds.
These will work with or without an alarm, without is how I described above.
Regards,
Dave
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#5 (permalink) Old 06-09-2004, 08:53 PM
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maybe have it somehow reverse with the acc swith on the radio, so it is only on when the car is off?

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#6 (permalink) Old 06-09-2004, 10:55 PM
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they didn't do anything to my car (that i've noticed) but I want to scare them odd next time. My question is though: what do I wire the relay to so it only activates when the car is double locked?

<span style='color:gray'><span style='font-family:Courier'>1995 e36 3 Series RIP
1999 e46 3 Series BURN IN HELL
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#7 (permalink) Old 06-10-2004, 12:14 AM
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locking mech?

2008 128i Jetblack
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#8 (permalink) Old 06-10-2004, 12:55 AM
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which is specifically located where and i need to grab which color wires....

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#9 (permalink) Old 06-10-2004, 07:40 AM
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If you only want it to flash when the car is "locked" then the same led I have mentioned can be used, they can be bought at most auto security shops for around 10 bucks. Then you need a latching relay module. I have them at my shop, ill try to remember to get the DEI part number when I get in. LED wiring goes like this: led red wire- 12v constant, blk wire- gnd, trigger wire (usually yellow) needs negative to flash so it gets connected to your latching relay modules output. Latching relay module is connected to 12v constant, ground, its trigger (your lock wire) then ground for the input to the relay and then the output to the led. These modules are programable for pulsed, timed or latched output by flipping switches. I used one of these to give an extended pulse to my lock wires (15 sec) to roll up my windows/ close my sunroof on my 5 series when I arm my alarm. Alot easier then the usual way...... power window module, cutting up the power window wiring, lots of wires into the door thru the door boot... etc.
Regards.
Dave

ps. its much easier to just have it turn on when ya shut off the car.
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#10 (permalink) Old 06-10-2004, 07:19 PM
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Thanks dude. I thought about wiring a rocker swith up to the accessory power (its always on, yes?) and hiding it under the carpet, but I want it to blink only when I press the lock, so certain people who like to break things that live next door can see it arming. It really all depends on what i buy and what I have time for.

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#11 (permalink) Old 06-10-2004, 10:04 PM
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went RS to pick up a switch and crap, but couldn't find a 12V LED that blinked, and I don't want to have a resisitor coming out of one end either. I got on ebay, saw this:

http://cgi.ebay.com/ebaymotors/ws/eBayISAP...sspagename=WDVW

Now, my stellar KE system has an acc wire. So I could wire any 3 prong LED like that it would work?

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#12 (permalink) Old 06-10-2004, 11:13 PM
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ya. should work/help. again that fancy relay may help...

2008 128i Jetblack
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#13 (permalink) Old 06-11-2004, 12:10 AM
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I think the neighbors just got home. I wonder if they have been served their warrants...

Anyway. I changed my mind. I have to take apart the interior anyway to install my AiNet cable (just put a second coat of clear the XM antenna. Once it'd dried out for a few days I'll shine it up nice with a compound and post pics.) and that will give me easy access to the Stellar module and I assume the central lock wires too. I'll play around. I also need to wash the car BAD.

I found some of those LEDs you posted earlier Dave (just now saw the link, missed it the first time.). I'm going to go with that because I want to adjust the speed of the blink. Did you find the module #? That would help me out a lot tomorrow.

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#14 (permalink) Old 06-11-2004, 09:49 AM
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Sorry forgot yesterday.... DEI part number: 611T
Have fun and be careful!! Use a digital multimeter to verify wires, we dont want anything hurt in the car!!
Regards,
Dave
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#15 (permalink) Old 06-11-2004, 10:46 AM
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Something just poped into my head... its one if those if this then that kind of installs. The way I mentioned earlier, to wire the relay module would cause the led to flash when you get in the car, start it and then lock the doors. You would be driving around with it flashing... not good. So......... the ground for the relay module should be tied to the ignition 12v+ circut to give it ground only when the car is off as the ignition circut "rests" at ground when car is off (easy way) or use a relay to switch a ground to it upon shutting off the car ( hard way if your not comfortable wiring realys manually). I could explain that way if you really want to go that route.
Regards.
Dave
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