The rearscreen wiper is activated by turning the ring nut on the end of the lever on the right of the steering wheel.This allows intermittent operation of the rear wiper.Pushing the lever gently towards the facia (unstable operation) activates the rearscreen washer function, via the windscreen washer pump, which rotates in the opposite direction and sends the detergent fluid towards the back.When the lever is held down, the rear wiper is activated and operates until the lever is released and continues for another stroke or so.The rear wiper may be operated only with the key ON.The rear wash/wipe circuit is protected by a special fuse and controlled by a relay (that also controls therear wash/wipe circuit) in the under-dashboard junction unit.The rear wiper is regulated by a device built into the stalk unit.