After looking up on the computer a schematic of the unit, all that was needed was removing four screws to remove the top and side cover which was one piece. Next was removal of electrical connection to burned out lamp, then removing burned out lamp and installing the new lamp and reconnecting electrical connection. Job was complete after reinstalling the cover.
Microwave now working with new lamp lighting when in use.
Thanks to great instructions from a previous person, this was super easy. It took 5 minutes to remove and replace the new motor. The big part of this job was cleaning out the cabinet where the microwave sits, since I had to take it out.
There is a 'door cover' pressed into the bottom of the microwave, that just has 6 small tabs that you need to cut. Then remove 1 screw, and the wire clip and the motor is changed. The door just reverses and re-installs with 1 screw. When the microwave was designed, this repair was in the engineers mind. So simple I couldn't beleive it.
