I purchased univ. single motor wiper switch and need some help on wiring it up to the f body wiper motor.

Switch posts:
low speed
high speed
park/off
battery/power

Wiper motor leads:
yellow - pwr
dk grn - ??
gry - low speed ??
ppl - high speed
blk - ground

Any input?

 

really, no one?

 

It's not easy. The trick is in the switch. I think that the speeds are controlled by resistance. Here is a schematic I found on my quest to do it. Good luck.
Wiper_motor_schematic.pdf