71-74 3 speed wiper switch wiring question

[Darius]

Hey guys. I have already burnt one switch up trying so I give up and am asking for help.
This is a switch for a 71-74 B Body 3 speed wiper switch. I am trying to match the correct lead from the wiper motor to the correct blade on the switch. The diagram is showing the raised letters on the back of the switch in the same orientation as the switch in the photo.
Can anyone tell me which color from the Motor harness goes to which blade on the switch?
This is going in a severely modified dash in a 70 GTX

 

[moparmarks]

That is a mid-72 through 74 switch. 71 and early 72 are different.

 

[72RoadrunnerGTX]