For your wash system you can use the water from your on board pressure supply. You only need a solenoid valve. As soon as the valve gets a signal via the wiper control, it will open to provide water for the wipe/wash program.
€49.91
€24.40
€123.11
€79.86
€685.44
€9.98
€127.55
€460.28
€70.98
€177.46