Wiring up a fake blinking led - JKowners.com : Jeep Wrangler JK Forum
 
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post #1 of 9 Old 04-16-2010, 05:25 PM Thread Starter
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Wiring up a fake blinking led

anyone know how to wire up a led (already have) so it will blink when truck is off? i used to know how to do it using a flasher from a turn signal but i cant remember how to do it. i know the led doesnt use 12v so no need to explain that, just how to wire up the flasher

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post #2 of 9 Old 04-16-2010, 07:03 PM
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I think you can just by a 'blinking led' that runs off 12v. Check ebay and such. Shouldn't be too hard to find.

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post #3 of 9 Old 04-16-2010, 07:07 PM
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rat shack sells leds that have the circuitry to make it blink built in. Then just use a SPDT relay to control the on/off state of the led. Wire it so the N.C. terminals go to the led. Wire the coil of the relay to an ignition controlled hot.

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post #4 of 9 Old 04-16-2010, 07:32 PM Thread Starter
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problem is its not for my jeep its for a super picky friend and he has the led (likes the color) and it fits in a hole thats was drilled by a previous owner, ill have to look for a blue one from radio shack

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post #5 of 9 Old 04-17-2010, 12:24 AM
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http://tinyurl.com/y4ql542

http://www.cappels.org/dproj/simples...r_Circuit.html

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post #6 of 9 Old 04-17-2010, 11:11 AM
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run a normally closed relay as a grounding switch so when power is off the relay closes and completes the LED circuit.

That would be the easiest way.

or buy one that is already commercially set up for it
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post #7 of 9 Old 04-23-2010, 07:56 AM
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actually, this might be a good idea for a jeep.

Seeing a red light blink could (key word could) detour a thief and if all it took was a $5 part to do it.

It's a win in my book
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post #8 of 9 Old 04-24-2010, 08:35 AM
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Found one last night on eBay for $6.99 plus a buck or so shipping, but I can't figure out how to copy and paste the link on this new phone. Ha.. Think I did a search for "blinking car led alarm". Looks simple to install, just connect 3 wires... We'll see...

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post #9 of 9 Old 05-15-2010, 10:00 PM
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IMO relay approach is the best, but with such a low current device you could in theory run a 12 volt constant line into a single pole double throw toggle switch then in and out of a old school flasher bulb then to the LED, then ground the other LED leg, stop the car flip the switch and your blinking.
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