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  #1  
Old 10-03-2010
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issue with LED turn signals

got some ebay special LED turn signals.

and got the electronic flasher so it doesn't hyperflash.

but now when the lights are off and i use one of the turn signals, the other side will dimly flash along with the other side. and vice versa. but when the lights are on there aren't any problems. not sure what the deal is..

the flasher?
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Old 10-03-2010
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something to do with putting a resistor in line? I dunno...


But anyways, I'm sure JP7 will post telling you you should've bought what he said. He'll know.
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Old 10-03-2010
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It has to be either the bulbs or the flasher causing that, but I don't know which. I do know the LED's I have don't do that.
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Old 10-04-2010
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guess i'll start with the flasher then go from there.
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Old 10-04-2010
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I bet the flasher is leaking voltage to the opposite circuit. Sounds like it was cheap.
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Old 10-04-2010
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oh it was. i had two different brands to choose from lol and i chose the cheaper one. i'll return it and try a different one!
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Old 10-04-2010
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Use the VLEDs flasher. People always say "they are all the same" but time after time I see posts like this and you can tell that they are not.

On a side note - how many LEDs do you have? Are your running lights and front signals also LED? When you convert all (or nearly all) of the exterior lighting you may need to non-polarized resistance to the running lights circuit to handle backfeed that comes from the way the system is designed.

Last edited by Jp7; 10-04-2010 at 02:02 PM.
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Old 10-04-2010
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There is not a single incadescent bulb anywhere on my truck other then in the cluster. Lol so that may be it
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Old 10-04-2010
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Quote:
Originally Posted by Tys 4x4 FTW View Post
There is not a single incadescent bulb anywhere on my truck other then in the cluster. Lol so that may be it
Look up my original "2004 cluster" build and browse towards the end. I had to put a "fake-o-bulb" in on the running lights circuit.

try this with alligator clips and see if it works for you.
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Old 10-04-2010
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for sure, thanks man
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Old 10-04-2010
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I am using LED's for every exterior light (besides headlights) and am using the V-LED flasher with no issues.
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Old 10-04-2010
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I am using LED's for every exterior light (besides headlights) and am using the V-LED flasher with no issues.
In my experience, Even with the VLEDs flasher in my experience you will need to provide unpolarized resistance on the running lights circuit or the turnsignals will bleed somewhere where they aren't supposed to.

There is probably a smarter way to fix this, I just haven't figured it out yet.

I was thinking of putting a diode backwards in parallel with the running light circuit and putting a large resistance on it. I don't know yet as there are risks with experimenting with this.

I had a similar problem with my IX, as the active center differential used 1V on the brake circuit and I had to make sure to account for this.

If you only have every bulb except the frontal amber's then there is plenty of room for current to flow back through those. Jeez, on my 04 I ONLY had the factory cluster bulbs and I still had no problems.

It's not that hard of a problem to solve, there are better ways to fix it then I did. My method was simple and it worked perfectly though.
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Old 10-04-2010
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Quote:
Originally Posted by Jp7 View Post

I was thinking of putting a diode backwards in parallel with the running light circuit and putting a large resistance on it. I don't know yet as there are risks with experimenting with this.


I would the think the diode would need to be ground side in series.

I suppose a zener diode would work in the method you are thinking.
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Old 10-04-2010
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I would the think the diode would need to be ground side in series.

I suppose a zener diode would work in the method you are thinking.
I'm not an EE, you may be right but to be honest its a tad over my head as of now for me to make a useful comment on your idea.
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Old 10-04-2010
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That's odd, I'm having a similar issue...

I just modded some 01 tail lights with 55x 5mm red leds in the lower reflector area & now my 3rd brake light sometimes blinks with both turn signals when I have the parking lights on.

I'm thinking about adding a 12v-14v zener diode to each tail light to see if it eliminates the feedback.

I used to run 63 led 3157 bulbs for turn signals in the rear, but I just switched those bulbs to the brake lights... never had any issue like that before.
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Old 10-29-2010
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Quote:
Originally Posted by buggman View Post
That's odd, I'm having a similar issue...

I just modded some 01 tail lights with 55x 5mm red leds in the lower reflector area & now my 3rd brake light sometimes blinks with both turn signals when I have the parking lights on.

I'm thinking about adding a 12v-14v zener diode to each tail light to see if it eliminates the feedback.

I used to run 63 led 3157 bulbs for turn signals in the rear, but I just switched those bulbs to the brake lights... never had any issue like that before.
I had a problem with running lights blinking when they weren't supposed to with my white truck (2003) but the VLEDs flasher eliminated that problem as well.

VLEDs flasher is the only choice.

The TRIDON flasher available at stores like autozone and murrays is no good.
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Old 10-29-2010
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I never had any issues with the Autozone flasher, I only ran it for about 6 months before the truck sold though.
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  #18  
Old 10-29-2010
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I guess I'm stupid. What is a flasher?
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Old 10-29-2010
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Just a little box thing under the dash, stock is blue. Looks like this

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Old 10-29-2010
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I never had any issues with the Autozone flasher, I only ran it for about 6 months before the truck sold though.
Quote:
Originally Posted by 04blackedge View Post
Just a little box thing under the dash, stock is blue. Looks like this

You won't have problems with simple LED setups - I thought you only had L1224R's in the rear.

It's for people who have more extravagant LED setups.

All running lamps, clusters, signals/brakes....ect..
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Old 10-29-2010
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brings back memories of my wiring nightmare. can't wait to tackle that again.
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  #22  
Old 11-13-2010
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I did it the easy way with my LEDs. superbrightleds.com has a flasher relay that works with LEDs, regular bulbs, or a combination of LEDs and regular bulbs. Its been in my truck for about 3 and a half months and no problems
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Old 11-13-2010
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After some experimenting, I found that if I replace my 63 led bulbs in the tails with the old 3157 incandescent bulbs, everything works as it should.

Either my 63 led bulbs are leaking voltage back when the headlights/running lights are on or as Jp7 mentioned, the ep27 flasher I have was a cheaper one.
Haven't had time to experiment further & vleds has been out of their flasher for weeks, so I haven't been able to do much more.

Another idea I had was to install an incandescent bulb (dual filament) behind the tail lights along with the led bulbs I have to see if that helps or hurts.
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  #24  
Old 11-13-2010
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it must be the flasher...

im tempted to get the one from superbright LED's and see if it works.
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Old 11-14-2010
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If you do, please let me know how it works out.
vleds has been out of their ep27 flasher forever.
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