New led tail Lightshow are blinking fast - JKowners.com : Jeep Wrangler JK Forum
 
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post #1 of 21 Old 02-23-2016, 08:20 AM Thread Starter
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New led tail Lightshow are blinking fast

Hi,

I just put in some JW Speakter taillights into my 2008 JKU. Since those taillights are in, the blinking is very fast, when I turn on the turn signal, compared to the stock taillights.
Is that a problem, behause the resistance of the led´s is different than the bulb and this causes this behaviour ?
Did anybody else have this problem and maybe has a solution ?

Thanks in advance for your help.
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post #2 of 21 Old 02-23-2016, 10:08 AM
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You should either add resistors to the turn signal wires or simply change the flasher unit to one designed for LEDs.
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post #3 of 21 Old 02-23-2016, 10:30 AM Thread Starter
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Quote:
Originally Posted by Tumbleweed44 View Post
You should either add resistors to the turn signal wires or simply change the flasher unit to one designed for LEDs.
Ok, thanks for your reply. Is there a led compatible flasher unit available for a 2008 JKU ?
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post #4 of 21 Old 02-23-2016, 06:16 PM
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There is no "flasher unit" for your Jeep, flash function is controlled by the computer... you need resistors (for the $$ of those, you'd think JWS would have built them into the light)
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post #5 of 21 Old 02-23-2016, 09:56 PM
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50 watt, 6 ohm resistors will do the trick. Wire them in series with the turn signal positive and ground. All of the lights on JKs are controlled by the CANbus, it's a computer that controls all of the electrical gadgets in the vehicle. Changing taillights to LEDs with lower draw confuses the system, and it blinks fast because it thinks the light is burned out.

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post #6 of 21 Old 02-24-2016, 05:21 AM
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I used these. Takes 5 minutes per side to wire up.
http://www.ebay.com/itm/2x-50W-6-ohm...item3f4578612b

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Last edited by PKDailey4; 02-24-2016 at 05:52 AM.
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post #7 of 21 Old 02-24-2016, 05:31 AM
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it'll help you to know that the tailights are on separate circuits-unlike traditional ,older non-CANbus Jeeps- just for the knowledge. Here is my source for all things LED ( including the fast-blink resistors)


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post #8 of 21 Old 02-24-2016, 05:01 PM
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I have a friend who just left his flashing fast. Hasn't hurt a thing.

If you do install the resistors, be sure you mount them so they don't get against any of the brake light wiring harness. They'll get hot enough to melt insulation and short out the wiring. (Ask me how I know.)

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post #9 of 21 Old 02-24-2016, 10:22 PM Thread Starter
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Thanks to all of you. Will try a resistor.
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post #10 of 21 Old 02-25-2016, 05:03 AM
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Quote:
Originally Posted by Traviso View Post
Thanks to all of you. Will try a resistor.
You need 2. One wired to each tail light

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post #11 of 21 Old 02-25-2016, 06:46 AM
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^x2 ; that's why I mentioned the tailights being on separate circuits early, fwiw.


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post #12 of 21 Old 02-25-2016, 07:15 AM
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Quote:
Originally Posted by keeponjeepinon View Post
50 watt, 6 ohm resistors will do the trick. Wire them in series with the turn signal positive and ground. All of the lights on JKs are controlled by the CANbus, it's a computer that controls all of the electrical gadgets in the vehicle. Changing taillights to LEDs with lower draw confuses the system, and it blinks fast because it thinks the light is burned out.
The resistors need to be wired in parallel with the bulb, between the turn signal/brake wire and ground.

Wiring them in series will cause the turn signal/brake lights to be very dim.

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post #13 of 21 Old 02-25-2016, 06:30 PM
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If you bought the J series JW speaker tail lights, it comes with the resistor required to install them.

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post #14 of 21 Old 02-25-2016, 07:59 PM Thread Starter
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Quote:
Originally Posted by 07unlimitedx View Post
If you bought the J series JW speaker tail lights, it comes with the resistor required to install them.
I got this ones from Quadratec: 07 JW SPEAKER 279 J LED TAIL LIGHTS JK

There was no resistor included (at least, I did bot find some.)
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post #15 of 21 Old 02-25-2016, 08:01 PM Thread Starter
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Quote:
Originally Posted by COBrien View Post
The resistors need to be wired in parallel with the bulb, between the turn signal/brake wire and ground.

Wiring them in series will cause the turn signal/brake lights to be very dim.
Thank you for the info.
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post #16 of 21 Old 02-25-2016, 08:01 PM Thread Starter
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Quote:
Originally Posted by PKDailey4 View Post
You need 2. One wired to each tail light
Thanks
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post #17 of 21 Old 02-26-2016, 10:01 AM
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That's strange they do not come equipped with em. The new headlights come with anti-flicker built in..plug and play no separate harness needed either. I have seen several posts on these tail lights and no one has mentioned your issue yet. I'd call JW Speaker and ask them.

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post #18 of 21 Old 02-26-2016, 10:18 AM
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Okay, I'm gonna go out on a limb here and ask . . .

Did you check to be sure that your other bulbs are all burning? Would suck if you went to all this trouble and only had a front bulb out.

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post #19 of 21 Old 02-26-2016, 10:32 AM Thread Starter
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Quote:
Originally Posted by UnlimiDozer View Post
Okay, I'm gonna go out on a limb here and ask . . .

Did you check to be sure that your other bulbs are all burning? Would suck if you went to all this trouble and only had a front bulb out.
Good question. But yes, the two front bulbs are new and work fine.
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post #20 of 21 Old 02-26-2016, 10:47 AM
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Quote:
Originally Posted by Traviso View Post
I got this ones from Quadratec: 07 JW SPEAKER 279 J LED TAIL LIGHTS JK

There was no resistor included (at least, I did bot find some.)
If you bought these:

http://www.quadratec.com/products/97009_8050_07.htm

They should have come with resistors. Call QT and let them know. Or, maybe a better option, call J.W. Speaker directly -- they might just send you some resistors for free.

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post #21 of 21 Old 02-26-2016, 09:37 PM
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Quote:
Originally Posted by COBrien View Post
If you bought these:

http://www.quadratec.com/products/97009_8050_07.htm

They should have come with resistors. Call QT and let them know. Or, maybe a better option, call J.W. Speaker directly -- they might just send you some resistors for free.
+1. I installed these back in November and they came with resistors pre-wired with a nice bracket to clip onto sheet metal.
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