1.unplug dryer. remove 3 screws to release cover from back plate slide to right to tilt forward exposing with.
2. made diagram of wiring contact points
3. remove star head screw holding switch, twist counterclockwise to release and remove wiring
4. replace switch by inserting and twisting clockwise, replace star head screw
5.return wiring via diagram
Replace cover and screws, plugin ,test. About 20 min