Hi. I’m new here but have been a T5 member for 10 years or more. I did a 5.1 to 6.1 full conversion over the winter but I’ve had issues with my headlamps. I’ve looked all over the forums and listings but I just need an answer on do T6.1 headlamps retrofit and work on T5.1 standard looms or not. Mine don’t so I can only assume there need to be som kind of pin out/coding/loom etc. I’ve done the diodes mod but doesn’t work. I don’t have VCDS either. Thanks in advance.