I pulled down the wire around the glass cover. . . Released on end of the wire from its holder being careful to not let the glass cover drop. Unscrewed the bulb and replaced with replacement. Easy, easy.
I went to the source of power on the stove and noticed one of the terminals had come loose from the terminal block and had shorted out against the cover of the terminal junction. After prying the loose terminal off cover I ordered new terminal block and received it the 2nd day. I removed the old terminal block and replaced the part in about 10 minutes..Thank you Parts Select for your easy to find diagrams and quick delivery.
I used a phillips screwdriver to remove the control switch. I drew a diagram on a piece paper where the wire contacts connected I wrote the different # and wire colors down . I compared the 2 switches they were the same. So I connected the wires . I put the 2 screws on. The stem was higher than the other switchers. So I had to cut the stem shorter. It had groves so it was easy to use a hacksaw to cut a little then use a lock pliers to hold the stem and another to break it off then it fit perfect I put the knob on presto new switch. Just like new.