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.
€9.98
€177.46
€78.75
€92.06
€49.91
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€510.19
€83.18
€42.15
€123.11