Hi guys, I’m asking a question that has not yet been answered in the Mercedes Vito / Viano area. Here you might be driving more with hangers, grins … The problem is that if I attach the trailer to my Vito 639, there the right rear light and the brake lights don’t work. On the Vito all lights work easily. The towing coupling on my Vito has been retrofitted. There seems to be nowhere a fuse. r Hanging electric, which was installed at the rear side, I renewed – without success. And the use of another suspension does not solve the problem either, I have already tested with an AHK bike carrier, as well …. The fault exists for a short time. I had my small hanger, which has a 7-pin electrical connection and for which I used a 7 to 13 – adapter, attached and there everything spun behind. The reason was that this adapter in its individual parts au and I’m not sure if I put everything together correctly. I don’t want to connect to the hanger anymore ….. Does anyone have an idea, do the electric sets of the AHK electrics still have a fuse somewhere??? pfistikas