Moin, unfortunately, the search for the above mentioned topic did not come much from. Therefore the question again which solution there is and who has had what experience with its conversions. The question: Is there a programmable wiper relay that would fit with the V40 MY 2003 ?(had I changed at the S70, simply original for the 99 of VW) Alternative would be a retrofitable rain sensor, then only by which manufacturer and how good are these. Has any of you equipped a rain sensor over the last 2-3 years and if so, from whom and how is the experience worth it? Would I be happy if I even get only experience values from hearing / saying. Thank you in advance greeting Paul