Wiring of wiper motor, help please

[Kirk211]

The wiring harness is stock from a 1980 CJ7 . I was trying to be careful when installing my new dash, but in all the fun a wire came off the wiper switch and now I have like 10 open wires and I'm not sure which one came unhooked.
The 3 wires to the wiper motor are still hooked up. What color is the last wire? I'm trying not to fry the switch or the wiper motor .

 

[Torxhead]

I have a Haynes repair manual and see red,black,and green wires to the wiper motor, page 10-19, map location D-8. In my Jeep I got the motor to work better by adding a ground wire to it.