What does this wire connect to??

I just had my 3 speed wiper motor gone through. When i got it back the main body plug had 4 pins instead of the 6 it had. I understand that one of the pins is suppose to be for the back up wiring. However, the 6th pin with a brownish wire had been cut and I'm not sure what it's suppose to connect to. Any help would be great.20201120_195948.jpg

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