DIY: Headlight LED's and blackout

NISMOFO · 04-24-2011, 12:58 AM

Quote:

Originally Posted by Javier

Hi. I'm thinking of doing the same to my headlights but my numbers indicate that I should be using 200 OHM resistors at 1 watt. The LEDs are runnung at 26mA not the 20mA that they are designed for so the current draws .762 watts. Therefore you should us at least a 1 watt resistor not 1/4 or 1/2. My numbers are as follows: 12 v devided .060mA (3 leds in series) = 200 ohms. Please let me know what you think. I just do not want to be opening these headlights once a year. The way I see it the current is greater than the resistor can handle and they may burn up.

I have the OPs car and lights. Three if the LEDs started flickering on one light. I have since disconnected the LEDs. Way too much headache. Not sure if this helps but more so a warning that you could be right ....or maybe something got loose.

Personal taste but I like it better without the flashy LEDs. I must be getting old.

mywhite370z1 · 04-25-2011, 06:45 AM

Same thing happened to my lights after about a year they all started to blink, I believe the watt on the resistor on the LEDs was to big and shorted out the LEDs, you have to get resistors for a voltage between 14.2, I measured the voltage on my 370z while the car was on, I changed out all the LEDs with a 1/8 watt and 180ohm or 200 ohm and they seem to be fine, it's been probably about 6 months now. I will keep you guys updated if anything goes wrong, also it's bad keeping the LEDs on while the car is turned of the current running to the LEDs is alot less and will cause a shortage

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04-25-2011, 06:45 AM	#2 (permalink)
mywhite370z1 Base Member Join Date: Jun 2010 Location: florida Posts: 4 Drives: white 370z 6sp Rep Power: 16	Same thing happened to my lights after about a year they all started to blink, I believe the watt on the resistor on the LEDs was to big and shorted out the LEDs, you have to get resistors for a voltage between 14.2, I measured the voltage on my 370z while the car was on, I changed out all the LEDs with a 1/8 watt and 180ohm or 200 ohm and they seem to be fine, it's been probably about 6 months now. I will keep you guys updated if anything goes wrong, also it's bad keeping the LEDs on while the car is turned of the current running to the LEDs is alot less and will cause a shortage