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Go Back   REVscene Automotive Forum > Technical Discussion > Autobody, Lighting, & Structural Tech

Autobody, Lighting, & Structural Tech This forum is brought to you by RPM Electronics in Burnaby.
Discussion about modifying your auotomotive lighting, retrofits, auto body, share projects, ideas, etc.


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Old 03-22-2010, 07:26 AM   #1
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LED bulbs make indicators blink fast?

I installed some LED replacements in my rear-taillights for the indicators, and now when I engage the indicator level they go Warp 10.... similar to when you have a blown bulb. I've checked and all the lights work, just really fast. This doesn't happen when I engage the emergency lights, just when I choose left or right....

Is it because they have less resistance or something? I'm considering going back to regular bulbs.

Any advice?
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Old 03-22-2010, 07:56 AM   #2
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Led has less resistance thus making it blink fast.

You got 2 options , 1st add load resistors 2nd change the turn signal relay
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Old 03-22-2010, 08:16 AM   #3
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Thanks... but I'm an electronics n00b... any suggestions where I can go to find out how to do those?
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Old 03-22-2010, 08:18 AM   #4
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autolismo has led resistors
overseas auto has them as well

OR

go to Soundsgood look for mike aka OrgasmDonor, he'll set you up proper
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Old 03-22-2010, 03:35 PM   #5
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yea man, better safe than sorry... I made the mistake of not adding load resistors when I swapped some bulbs... and blew a few fuses, cost me $100 to fix at dealership cuz I didn't know my car had a hidden fckin fuse box..

the fuses were like $4 though, dealership labour killed me
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Old 03-22-2010, 04:10 PM   #6
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Yeotch!
Ok... Time to put the old bulbs back and find some resistors. Thanks.
I'm guessing my brake lights (which are now also LED) will also need these resistors? They seem to be working, but then again, if it wasn't for the fast indicating I wouldn't know any better about the indicators.
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Old 04-02-2010, 03:45 PM   #7
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http://www.cdnautoworks.com/led/~frmproddet.htm
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Old 04-04-2010, 04:49 PM   #8
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LED bulbs draw less power, which means they would draw less current from the same source. Which is proportional to an increase of resistance. Why would an LED bulb blow a fuse? I think they may have just been reversed biased so they don't turn on. (LED only conduct one way, unlike halogens which will work when 12V is applied at either contact)
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Old 04-17-2010, 03:27 PM   #9
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need resistors when you switch to leds
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