new authorisation cadillac eldorado 2000

Hello from Berlin, got me a 2000 Eldo from the states and now it starts. Exhaust gas reports and type sheet I get sent by TÜV in the next few days. Red turn signals should be made via exemption. But what do I do with the main headlights? Does someone have experience and can tell me how to proceed? Daytime driving lights should go off via OBD. Is there anything else to consider or, where can cost traps lurk? I hope that was kei a question, how do you get to read it every day. Had you already Googled but not found anything. Are there some capable professionals in Berlin or the surrounding area who can help me with the upgrade? Greetings from Berlin Detlef