Wiper Linkage Available Here. Your vehicle's wiper linkage is connected to the wiper motor and allows the windscreen wipers to move back and forth. Although this part is typically designed to last for the lifetime of a vehicle, sometimes it can fail. This happens particularly in climates with especially wet weather or in cases where the wipers may freeze to the windscreen due to excessive cold. These conditions can put a strain on the wiper linkage and result in a malfunction or failure. Signs that your vehicle's wiper linkage needs to be replaced include irregular wiper movement such as sputtering, a grinding noise while in operation, or simply that the wipers don't operate when turned on.