The car one below the rear view mirror central, and the caravan front left window. Be very carefull with them they are a fit once, and sellotape is is NOT allowed if you change your windscreen then you can get a replacement sticker , I am not sure how though.
As I remember the instructions and diagrams are on the Vignette. You can purchase fuel at some self service fuel pumps in Euros, put the notes in and the pump stops automatically. The German Swiss are stricter than the Italian or French Swiss. Do not drop any litter, even accidentally, they are incredibly clean in the north. Cheapest places to eat when out are their Bakeries. An ice cream can be more expensive than a beer or wine. Wine and beer is cheap to buy in the supermarkets. Trains and buses run spot onto the minute , small dogs less then 5kg can travel free.