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I thought the speed dial was required with the rain sensor system. Are you sure it's OEM?
Edit: I remember now that yours is not OEM or the Porsche retrofit kit. That unit would have come with its own relay. You'll need to find the instructions for it and maybe check the wiring.
Most aftermarket kits work in the intermittent position (3) and will only come on when rain is detected. Was it raining or did you sprinkle some water on the windshield?
Last edited by particlewave; 12-07-2018 at 12:25 AM.
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