I looked up the part I needed from AppliancePartsPros.com and ordered it. Being that I changed out my husbands headlights on his Toyota Tundra, I thought this would be a snap. I followed the instructions that I found online. Actually a combination of them. I did have to have a special little ratchet that the bit had a little hole in the middle to accept a couple of funny looking screws that helped hold the cover on the unit. Sent my hubby to Lowes and had to spend $10 for a miniature set of all kinds of goodies to go with the ratchet. Worked like a charm. Removed the old bulb and screwed the one screw back into place to hold the bulb in, and put the cover back on. Tricky. Have to align the front edges just right to get the inside lip of the microwave to slide into the slots on the cover. Did it by myself! Slide the oven back onto its place on the counter top: no light. Couldn't deal with that at the time. Tomorrow's another day. Read that it could be other costly things such as the door latches and the board. Today, after church, after I was calm, I took the cover off of the microwave. There it was. I forgot to plug the connection into the light bulb unit. Hate to admit it, but I own it, and I have light.