This experience led to his invention of the windscreen wiper. Gladstone's version of the windscreen wiper was never manufactured, however. All XJ40s have a chrome surround for the windscreen and a single windscreen wiper. All came with color-coded wing mirrors and a rear windscreen wiper. The driver's windscreen wiper is badly located. The steering box and the windscreen wiper assemblies came from the Type 3. German cars had a solenoid operated variable pressure windscreen wiper. The loose cable then catches on the windscreen wiper mechanism and fatigues over time. The only other external indicator of the age of the car is the windscreen wiper. The only part that has been reused from its predecessor was the windscreen wiper.