Hello belva 1956,
I think I have found the wiring diagram for your water valve unit. GE=yellow, GE/VI=yellow and violet(must look reddish) GE/BR= yellow and brown.
The connector number is x65.
Pin 1 is yellow, pin 2 is yellow and violet, pin 3 is yellow and brown.
I will attach the wiring diagram so you can check it out yourself. Please accept this answer. If you could please leave a short positive comment it would be greatly appreciated. Thank you.
BMW Mechanic
Level 1 BMW Master Certification, 9 Years Dealer experience, Team Leader, Shop Foreman