This is to fit variable wiper controls from an Omega into your Vectra B.
A PDF of the how-to is
here
Full credit and thanks goes to Mike_DTi on VV.OC. Once again thank you for allowing me to share this excellent how-to Mike.
I also recommend him for purchasing the kits. His kit is which we fitted, and using his how-to took us only 10-15 mins, and works flawlessly.