996 Turbo / GT2 Turbo discussion on previous model 2000-2005 Porsche 911 Twin Turbo and 911 GT2.

LED Tail Light 6 month product review

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Old Nov 26, 2015 | 03:47 PM
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Originally Posted by sinKing
These sound like a quality product.
haha, 'fraid not. but they sure look dope! just ask steve

seriously though. would love to know of us early adopters of them, whats the percentage of them having had a few fail?? i bet it's higher than it should be and i cant even imagine what might be an "acceptable" range of failure!?

all i know is I'm outa warranty any minute and i paid 900 fkn dollars for em so i'd sure like them to consistently EMIT some FREAKIN LIGHT! ya damn DIODE(s)!
 
Old Nov 26, 2015 | 04:03 PM
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Sounds like I should check mine ASAP! They do look damn nice and the reverse lights are terrific too!
 
Old Nov 27, 2015 | 11:32 AM
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Originally Posted by Turbo Fever
Slider I also had 3 out which were the 3 contiguous yellow turn signal lights is that what happened to you?
led lights should be supplied with pulsating current
 
Old Nov 27, 2015 | 12:04 PM
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Originally Posted by Turbo Fever
Slider I also had 3 out which were the 3 contiguous yellow turn signal lights is that what happened to you?
No, for me - 3 red vertical just left of the turn signal. Hardly noticeable, but they are there if you are looking.
 
Old Nov 27, 2015 | 11:56 PM
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Mine are all working as of last night! Pulsating current for an LED? First I've heard that...
 
Old Nov 28, 2015 | 01:54 AM
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Originally Posted by BLKMGK
Mine are all working as of last night! Pulsating current for an LED? First I've heard that...
look at the videos behind 997 turbo led s and you can see it
 
Old Nov 28, 2015 | 07:33 AM
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Yes, I've seen the weirdness with the refresh rate videotaping LED lights on some cars but not all. Cycling them fast will keep them cooler and can be used when overdriving the lights. I don't believe it's a general requirement to power LED.
 
Old Nov 28, 2015 | 08:37 AM
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... all i know is i no longer rest my foot on the go slow pedal while sitting at stoplights. sheesh.

who makes taillights that burnout!! within a cpl months!? arghhh.
 
Old Nov 28, 2015 | 11:11 AM
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Originally Posted by '02996ttx50
... who makes taillights that burnout!! within a cpl months!? arghhh.
The Chinese?
 
Old Nov 28, 2015 | 12:31 PM
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^ actually i think they're "taiwanese"?? all i know is they are poorly made, and that's just a guess..

.. but as you know, if we took away EVERYTHING made in china, we be without clothing, cooking over open fires, and listening to philco radios.
 
Old Nov 28, 2015 | 11:30 PM
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I'd pissed if I had forked up 1K and LED's started failing within a year. Says a lot about the quality of these Taiwan made units. Leave it to the rice boy community..........
 
Old Nov 29, 2015 | 09:20 AM
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Originally Posted by winnigt2
look at the videos behind 997 turbo led s and you can see it
It's the camera,not the lights. Stand behind the car while someone presses the brake - no pulses.
 
Old Nov 29, 2015 | 09:26 AM
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Originally Posted by jhbrennan
It's the camera,not the lights. Stand behind the car while someone presses the brake - no pulses.
It's both. It happens when the refresh rates of the camera and the lights don't sync up.
 
Old Nov 29, 2015 | 09:30 AM
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Originally Posted by jhbrennan
It's the camera,not the lights. Stand behind the car while someone presses the brake - no pulses.
Maybe. It has to do with persistence of vision and frame rate. Your eyes can't detect pulses faster than around 60 per second. Fluorescent tubes flash but you seldom notice them for instance. It's possible that some OEM are pulsing the LED to lower heat and maybe even do so while overdriving them but so far as I know it's NOT a requirement for the technology. Cameras have different rates and when out of synch can make pulsing noticeable. Video of spinning airplane props etc. can also demonstrate this, obviously the prop is still spinning even when it appears still. Oh, look at some of the cheap Christmas LED. Ever notice how they sometimes seem to shimmer or sparkle a little? 60cycle "hum" from the AC since the power is getting rectified by the LED acting as diodes, the flicker is pretty close to our ability to sense it apparently.

Anyway, TL:DR it's not just a camera thing the lights may be pulsed but I don't think it's a requirement of the technology. It should help longevity to do it though by lowering heat if you're overdriving them. Hopefully these lights aren't overdriving the LED...
 
Old Nov 30, 2015 | 04:18 PM
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Originally Posted by winnigt2
led lights should be supplied with pulsating current
The 3 LEDs that burned out for me were all the yellow turn signal LEDs so they are only on intermittently and briefly. However, other owners had the running LEDs burn out. So there seems to be a very basic problem. I am wondering if the moisture issue is degrading the contacts? I raised this issue as a potential problem last spring when the moisture problem was first discovered and discussed. If this is the case then perhaps the contacts need to be sealed with a rubberized coating.
 


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