Hello, I was at the DEKRA last Monday and unfortunately the HU with some other parts like e.g. exhaust and crossbars did not pass. Apart from these moated parts, the return driving lights were not lit when inserted backward. Does any of you have an idea what is going wrong? The light bulbs were both in order and I also plugged in two new bulbs, only it did nothing. Mass cables are connected and all other light bulbs w ie, turn signal, rear lights, brake lights work! I have the assumption that the switch contact on the switch stick may not be okay. But I can’t find a switch like this. Has anyone ever had such a problem with you? Does anyone know where to find this switch on the switch stick? I would be very grateful for your support and help. Dillinger