Killed power, and unplugged the range.
Removed 4 screws from the upper panel on the back; removed panel.
Depressed the sides of the old switch and pushed it out through the front of the stove.
Put the wires on the new switch and pushed it in, locking itself in position.
reinstalled the upper back panel.
The oven door seal was even easier. Pulled the old one off, and put the new one on, working from the top center of the door. ends just tuck into holes at the bottom of the door.