Hi Siggenn Can you please give some more info, ie, model, year and make of kit ? At a guess you have can-bus type system, and that is what is causing the problem ! Radiotwo ps they are not ileagal, I have had after market fitted to my car for the past 3 years without any problems with law I have a '01 Sharan 1,9TDi. have tried with ballasts from my passat and still the same issue, so it's not the new kit that is malfunctioning. have even tired hooking up new harness and relay from the battery. and sometimes it works ok, no problem with wipers or locks. then suddenly it starts acting funny again.