I checked out the "How To" video on U-Tube and it really was that simple. About ten minutes from start to finish. I removed 6 screws from the back cover panel of our dryer and the switch un-clipped from it's socket as shown in the video. I needed a screwdriver to start the wires off the switch posts and I simply replaced the wires one at a time. I replaced the back panel and installed the push knob.
Job Done, dryer back in place barely 10 Mins.