Hi all, I have read a few threads on this subject but struggle in finding out what resistors etc are needed to create a circuit that would work on my c220 Cdi 54 plate which has the dpf filter. If any one has successfully managed this task can you please let me know. I have spent a lot recently on new parts and again the light is back on and as the system is not working the car is running better than ever hence reason why I want kill the light.