Built in Audi A4 (B7 / year 2005): I also got me only at ATU, the "great" LED bought bulbs with supposedly existing resistance, on which is on the packaging: ... installed "No error messages on-board computer", and already came the error message that the license plate light is defective! The result was a real quarrel with ATU so I can give back again this stupid LED lights and get my money back. Disillusionment set in - OK - I just have to accept that I can not have a white light at the license plate light ... until I saw this offer. This version is indeed much more expensive than the ATU LEDs, but who have a real resistance and you exchange the whole thing, not just the lights. I am with the result more than satisfied, it lights super white, just as I wanted it, and in addition there no persistent, annoying error message on board computer! Thumbs up!