My hood pad is missing, so maybe it was easier for me to get at the wires because of that. I had the emitters soaking in isopropyl alcohol already from an off line suggestion. I will post how that works out. I kind of wonder how much calcium buildup could be coming from the washer fluid. Whatever the buildup is might respond to acid. Off the car the alcohol seems to have cleared up the ports. I will flush the lines, install the emitters, and test them now.