GM Stalk to aftermarket Wiper/washer

[vintovka]

I found this on a IH forum site and am asking you electrical smart guys to take look and see if its right. Concerned it may not be right What do you think?

I have an 1987 GM Van column with the full stalk controls for Wiper, Washer cruise control. It terminates in a multi plug and will either split it open or find the female side and graft onto it. Only interested in the washer wiper functions.

As always All comments and suggestions appreciated.