I am confused. What are eurolights? I know there is a company 'eurolights' that sells overwattage and coated bulbs. They are at: http:www.EuroLights.com But I have also noticed posts describing members changing the lens from DOT(US SPEC) to e-coded. These have also been called eurolights. Could someone explain the terminology? If US spec audis can be changed to e-code lens, who sells them?