I have a rotary style switch for 64-65-66 . It is a grounding type switch. It has three terminals. It grounds one for the washer. Of the other two, both are grounded for low and one is grounded for high. Nothing grounded for off. These years use a seperate harness for the wiper motor. if you can score a switsc, motor, and harness off the same car, the motor should bolt on. just run an ignition hot to the wiper harness, and your good to go! GOOD LUCK, STAN