Variable speed vs. 3 speed wipers

Yes I realize that. It was just a generic pic to show how the wiring is identified behind the switch. Each harness has the same wires, and whatever switch you use has the corresponding letter ID's. You've got to match them up. A variable switch will directly plug into your harness, but the three speed will need the wires moved around and installed in the newer connector so they match the terminal layout at the rear of the 3 speed switch.