You swapped the pins on the tail lights,right?Cant help you on your dimmer issue but I can confirm that after installing Depos and rear facelift tail lights (swapped pins),I get an LCM error registered on our dealer machine.In fact ,the detailed errors show that I have blown rear lights ,reverse ,side lights ,turn signal,etc ,blow side lights at the front and xenon lights faulty!When ,in fact all are working fine and I dont even have any lights out message on the OBC!So ,no problem ,its the just the LCM not recognizing non OE equipment.