My Ship Has Come In
12-04-10, 07:39 PM
#18
Racer
Not really. The hella drls and philips drls use the same leds as the flashlights.
Also, HID has much higher lumen output than any led.
Until leds start approaching the lumen output of a basic halogen headlight, they shouldnt be used on a fog or head lamp. Have you noticed, lexus stopped putting those led headlights on the LS?
Also, HID has much higher lumen output than any led.
Until leds start approaching the lumen output of a basic halogen headlight, they shouldnt be used on a fog or head lamp. Have you noticed, lexus stopped putting those led headlights on the LS?
12-05-10, 06:04 AM
#19
Moderator
Thread Starter
Not really. The hella drls and philips drls use the same leds as the flashlights.
Also, HID has much higher lumen output than any led.
Until leds start approaching the lumen output of a basic halogen headlight, they shouldnt be used on a fog or head lamp. Have you noticed, lexus stopped putting those led headlights on the LS?
Also, HID has much higher lumen output than any led.
Until leds start approaching the lumen output of a basic halogen headlight, they shouldnt be used on a fog or head lamp. Have you noticed, lexus stopped putting those led headlights on the LS?
Koz
Last edited by Koz; 12-06-10 at 06:31 AM.
12-06-10, 06:28 AM
#21
Moderator
Thread Starter
I'm thinking about changing the running board bulbs (4 forward firing) to the 360 degree bulbs because the forward firing bulbs throw the light in two spots straight down (plenty of light) and not so much on the running boards. I will post the results.
Koz
Koz
12-06-10, 04:57 PM
#23
You'll get more light on the running boards with the 360 degree bulbs, but significantly less light on the ground.
12-06-10, 05:21 PM
#24
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05-01-11, 03:22 PM
#25
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This is all very helpful to me. I can not believe that Lexus is still using bulbs that give off this yellow color on a SUV in this price range. We just got rid of our Audi Q7 for this GX and I love everything except for these bulbs. I did speak with a technician and he told me that if I replaced the running board lights with LED lights they would flicker instead of dimming due to LED's not being able to handle the diming function. Have you found this to be true?
05-01-11, 03:56 PM
#26
This is all very helpful to me. I can not believe that Lexus is still using bulbs that give off this yellow color on a SUV in this price range. We just got rid of our Audi Q7 for this GX and I love everything except for these bulbs. I did speak with a technician and he told me that if I replaced the running board lights with LED lights they would flicker instead of dimming due to LED's not being able to handle the diming function. Have you found this to be true?
The modern LED bulbs also dim.
The best quality bulbs I've found are from VLEDs as listed on the DIY thread.
05-01-11, 05:31 PM
#27
It depends on how the dimming circuit was designed. If it is a DC (constant voltage) circuit you are correct ... reducing the voltage will dim the LEDs.
However, if it is an AC (varying voltage) circuit ... well, it depends on how it was designed. A simple AC circuit will probably work, but one that is controlled by digital logic that varies the waveform may not. In particular, digital logic that turns the circuit off and on for varying duty cycles will likely flicker. Incandescent bulbs are largely immune to flicker as their response is so slow, but LED's can turn on and off very quickly ... think about the blinking LEDs on modern electronics ... they can blink many times per second, which our eye perceives as flicker.
Bottom line ... lacking the details of how the circuit works, test it with one LED before investing in wholesale replacement.
Regards,
SaniDel
However, if it is an AC (varying voltage) circuit ... well, it depends on how it was designed. A simple AC circuit will probably work, but one that is controlled by digital logic that varies the waveform may not. In particular, digital logic that turns the circuit off and on for varying duty cycles will likely flicker. Incandescent bulbs are largely immune to flicker as their response is so slow, but LED's can turn on and off very quickly ... think about the blinking LEDs on modern electronics ... they can blink many times per second, which our eye perceives as flicker.
Bottom line ... lacking the details of how the circuit works, test it with one LED before investing in wholesale replacement.
Regards,
SaniDel
05-01-11, 07:26 PM
#28
It depends on how the dimming circuit was designed. If it is a DC (constant voltage) circuit you are correct ... reducing the voltage will dim the LEDs.
However, if it is an AC (varying voltage) circuit ... well, it depends on how it was designed. A simple AC circuit will probably work, but one that is controlled by digital logic that varies the waveform may not. In particular, digital logic that turns the circuit off and on for varying duty cycles will likely flicker. Incandescent bulbs are largely immune to flicker as their response is so slow, but LED's can turn on and off very quickly ... think about the blinking LEDs on modern electronics ... they can blink many times per second, which our eye perceives as flicker.
Bottom line ... lacking the details of how the circuit works, test it with one LED before investing in wholesale replacement.
Regards,
SaniDel
However, if it is an AC (varying voltage) circuit ... well, it depends on how it was designed. A simple AC circuit will probably work, but one that is controlled by digital logic that varies the waveform may not. In particular, digital logic that turns the circuit off and on for varying duty cycles will likely flicker. Incandescent bulbs are largely immune to flicker as their response is so slow, but LED's can turn on and off very quickly ... think about the blinking LEDs on modern electronics ... they can blink many times per second, which our eye perceives as flicker.
Bottom line ... lacking the details of how the circuit works, test it with one LED before investing in wholesale replacement.
Regards,
SaniDel
05-02-11, 09:22 AM
#30
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So someone has replaced these running board lights with LED's and can verify that they dont flicker? Also I would like to know the outcome of KOZ's 360 degree led's as opposed to the downfiring ones for the running boards. Are these hard to install?
