Restored 71 wiper motor - harness

Just had my 71 motor rebuilt - and I didn't recall this small harness on the motor when I sent it in; 71 Demon 340-4spd.

Looked in my new 71 chassis manual and FSM and can't decipher where this plug goes to?
I don't seen anything on the current engine harness, but its been spliced a hundred times and is being replaced.

I'm looking to see where the plug with the purple and black wire go to?

Thank you!