I did look that the wiper motor and I didn’t see anything that jumped out at me as to where a vacuum line may go, however; there is a lot of crud caked on one side. It may be hiding out there. I will dog through and see if I find anything. I did look at the wiper site and Some YouTube videos on how to check if it’s functioning. So I’ll go that route first. Then decide if I need a new one later.