1974 Super Beetle; The washer system does not allow fluid to get to the spray nozzles on the windshield washer. The pressure from the spare tire goes to the fire wall and vanishes into the steering column where the lever switch is mounted. The question is..Is this lever operated switch accessible to service and is it electrically operated or just a release of air pressure through a manually activated lever arm? I believe the line is plugged , probably at the lever valve or switch. I have no idea what it looks like or how to get to it. Any advice will be appreciated.