I recently picked up a wiper motor without the washer pump. My car has the recessed wipers and pulse wiper feature. I was looking at a picture in a 77 Fisher body manual and they all show the washer pump having four pins. I also notice I have two connectors both having two terminals each. My issue is when searching I can only find 2 and three pin washer pumps. Does anyone know where to find the 4 pin kind?