Finally got around to upgrading my interior lighting in my Audi A3(8p) to LED Superwhite bulbs and I have never been happier. I considered using xenon gas super whites however I made the choice to go with LEDs. After doing hours of research, I couldnt really find anything comprehensive about Audi owners doing this upgrade. What I got were bits and pieces of information from various forums so I decided to do my own RnD and overcome the challenges of this project.


Check out my post: http://tadasauce.wordpress.com/2009/03/21/led-superwhite-interior-lighting/

its difficult to collect information.check out the Audi website or ask from any known engineer.

Here's a few pics of the LED Install

http://i107.photobucket.com/albums/m281/theSaucee/Audi%20A3/LED/IMG_1145.jpg

http://i107.photobucket.com/albums/m281/theSaucee/Audi%20A3/LED/IMG_1173.jpg

Audi A3 LED Interior Light Upgrade DIY Guide ===> http://tadasauce.wordpress.com/2009/03/21/led-superwhite-interior-lighting/

Looks pretty good. Decent write up. Did you do any research or testing to find the resistance of the original bulbs to match up the resistor? Or did you just blindly pick one form radio shack?

Looks pretty good. Decent write up. Did you do any research or testing to find the resistance of the original bulbs to match up the resistor? Or did you just blindly pick one form radio shack?

I did some research and found that Autolumination.com were selling LED load equalizers. They say that load equalizer "Corrects Most LED Related Problems of led bulbs that will not shut off - Adds about 1-2 watts of load. One for each led bulb resolves after glow when led bulbs is supposed tro shut off." The equalizer was rated at 100 OHM, 10 watts. The LED Dome light I bought was rated at 2 Watts. The stock bulb is rated at 10 Watts. I took a chance and bought a 100 OHM, 1 watt resistor in hopes that it wouldn't get too hot. It worked out perfect. The resistor heats up when the bulb is in use but it doesnt get overly hot. See my blog and the temperature comparisons. I also bought a 100 OHM, 10watt ceramic resistor. When I used this resistor, the ceramic stayed cool to the touch being that it was rated for a much higher wattage. I chose to use the smaller 100ohm 1watt resistor in the dome due to space limitations. I did this knowingly that it would produce more heat than the higher rated 100 OHM 10watt so thats why I tested the temperature after the install to make sure it was working at normal operating temperatures. I may run into problems later with the smaller 100 OHM 1watt resistor should I leave my dome light on for extended periods of time. If at worst, the resistor will crack and I'd just have to replace it. I did a test for 10 minutes of coninuous lights on time and the temerature never got above 160 degrees. Keep in mind that the stock bulb runs at over 200 degrees.

Check out Autolumination.com for details on their load equalizer. Heres a link http://autolumination.com/equalizers.htm

its very difficult to find information.you should go to workshop and ask them .they will give more information.