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.
It'd be handy if you told us what you are working on. Year, make, model. Brown is likely the power/ switching for the washer pump
MyMopar has a 71 factory manual. The wiper wiring, however is somewhat convoluted (2/3/ variable speed)
http://www.mymopar.com/downloads/1971/71ValiantA.JPG Should be your washer pump as previously mentioned. Two browns in the connector, one harnesses up to the wiper motor. I had the same dilemma when I got my car.