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Unread 04-24-2013, 08:59 AM   #1
Jeepmonster33
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LED issues!!! HELP!!

Been working on a 91 YJ and installed LED tail lights and blinkers, i have a LED flasher in it and have resistors at all 4 corners. When i turn on the blinkers all 4 lights blink, when the brakes applied they work normally. im stumped and haven't been able to find any info on it.

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Unread 04-24-2013, 09:50 AM   #2
SeanB95YJ
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if you have an electronic flasher (EL-12 I think?) then there's no need for the additional resistors you mentioned. I'm not saying that's necessarily the cause of your problem, but no sense having it there.... it might clear it up, but if not, at least that's one thing you can knock off the list to check.
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[FONT="Comic Sans MS"][COLOR="Blue"]Sean B. - Schenectady, NY - 95 YJ, 350/700r4/NP241, JB Shorty SYE, 8.8 rear, 2" BDS, 1" homebrew shackles, Daystar 1" BL, TJ flares, 35x12.50 General Grabber AT2 on 15x10 Bart D-Truckers, Polyshield polycarbonate windshield, HD over/under crossover steering
[/COLOR] [COLOR="Red"]swap/build thread: [url]http://www.jeepforum.com/forum/f22/after-almost-4-years-finally-my-own-build-swap-thread-1542284/[/url][/COLOR][/FONT]
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Unread 04-24-2013, 10:05 AM   #3
Jeepmonster33
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Ive checked a lot off the list haha, we started with the electric/LED flasher-nothing, then the load equalizer-nothing. So now im stumped. It all worked fine before the LED by the way.
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Unread 04-24-2013, 10:59 AM   #4
SeanB95YJ
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did you check the polarity on the lights? LEDs can't be wired backwards the way a regular filament bulb can
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[FONT="Comic Sans MS"][COLOR="Blue"]Sean B. - Schenectady, NY - 95 YJ, 350/700r4/NP241, JB Shorty SYE, 8.8 rear, 2" BDS, 1" homebrew shackles, Daystar 1" BL, TJ flares, 35x12.50 General Grabber AT2 on 15x10 Bart D-Truckers, Polyshield polycarbonate windshield, HD over/under crossover steering
[/COLOR] [COLOR="Red"]swap/build thread: [url]http://www.jeepforum.com/forum/f22/after-almost-4-years-finally-my-own-build-swap-thread-1542284/[/url][/COLOR][/FONT]
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Unread 04-24-2013, 11:25 AM   #5
Jeepmonster33
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Im 99% sure polarity is right, brake lights and running light work fine.
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Unread 04-24-2013, 11:30 AM   #6
sjones26573
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If it all lights up, then polarity is correct. Something else is wrong. These Jeeps are extremely finickey about LEDs
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Unread 04-24-2013, 12:08 PM   #7
msprooch
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Draw up a wiring diagram and post it on here. There are a few electrical types around...some who work with automotive LEDs for a living
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Unread 04-24-2013, 12:58 PM   #8
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Are you using a no load electronic flasher?

Sent from a Jeep.
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Unread 04-24-2013, 12:59 PM   #9
jokerchief462
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If more than one light is coming on at a time chase the grounds first you may be getting some feedback. I know mine were bad and had to be cleaned up bare metal works best.
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Unread 04-24-2013, 02:10 PM   #10
Jeepmonster33
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this is the flasher we're using---Littelfuse Blister Pack - Electronic Flasher

What if i were to add diodes into the positive side of the circuit?
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Unread 04-24-2013, 02:26 PM   #11
msprooch
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Diodes allow current to flow in only one direction. If you orientate them in the proper way you can put them on the negative side and get the same result.
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Unread 04-24-2013, 03:33 PM   #12
Fenix85182
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When I installed my LED brake lights and LED reverse lights, I just spliced them in to the harness--no diodes/resistors/or flasher relay change. I don't believe the lights had anything special built in, and they just worked correctly, regular speed. I did have a few ground issues, but that resulted in them not lighting at all, rather than too many lights lighting.
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Unread 04-24-2013, 03:35 PM   #13
sjones26573
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Quote:
Originally Posted by Fenix85182 View Post
When I installed my LED brake lights and LED reverse lights, I just spliced them in to the harness--no diodes/resistors/or flasher relay change. I don't believe the lights had anything special built in, and they just worked correctly, regular speed. I did have a few ground issues, but that resulted in them not lighting at all, rather than too many lights lighting.
Which is how it's supposed to be...
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Originally Posted by Jeremy Clarkson - Top Gear Botswana Special
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Unread 04-24-2013, 05:20 PM   #14
Xpress
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Quote:
Originally Posted by Fenix85182 View Post
When I installed my LED brake lights and LED reverse lights, I just spliced them in to the harness--no diodes/resistors/or flasher relay change. I don't believe the lights had anything special built in, and they just worked correctly, regular speed. I did have a few ground issues, but that resulted in them not lighting at all, rather than too many lights lighting.
What brand of lights were they? There are still a lot of LED lamps that do have resistors built into them, then there are the cheap ones (like from HF) that people around here cheap out on then get all sorts of issues because of the current draw.

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Which is how it's supposed to be...
Depends on which lamps you buy. Don't cheap out, and do your research first.
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[URL="http://www.jeepforum.com/forum/f12/another-5-2l-yj-thread-1503048/"]My 5.2L Build thread[/URL]

-1989 Jeep Wrangler 2.5L, soon to be 5.2L
-1996 Jeep Grand Cherokar 5.2L, donor and rainy day driver
-2004 Kawasaki KLR650 sunny day driver
[QUOTE=mudsweatNgearz;21162729]Leave em off and weld an I beam on. Bumperetts just scream homo.[/QUOTE]
"A well regulated Militia, being necessary to the security of a free State, the [B][I]RIGHT[/I][/B] of the people to keep and bear Arms, [B][I]SHALL NOT BE INFRINGED[/I][/B]."
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Unread 04-24-2013, 05:36 PM   #15
Jeepmonster33
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thats what we did, just spliced them in..then came the flasher, then the equalizers, the only thing is we dont have reverse lights at all.
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