Windshield wipers dont work tried motor etc. Any ideas? 97 Ford Taurus?

My windshield wipers don’t work. They haven’t for some time. Originally they would only work on high mode, and now they don’t work at all. I’ve went to so many auto places and got different answers, I was told it was the motor twice, and then the switch. So we have replaced the motor, and the multi function switch both didn’t work. (We did it ourselves after the auto places telling us what was wrong) I’m now stuck. Its not the fuses either those seem good. What else could it be? I need to get this fixed so I can drive in the rain, anything I can do to help narrow it down? Any answers are appreciated!