Removed filters. Turned off power to the hood. Lowered keep hot racks and placed a towel on the racks. Removed 3 flat head screws (item A in the exploded diagram) holding up the Lamp & Switch Housing, Lowered (sort of folded back) the housing, and rested it on the towels. This gave me access to the switch and lamp holder connections, Took a picture of everything before continuing, Removed applicable wires from the switch and lamp holder.
Squeezed back side of the old switch to force it forward out the front of the housing. Installed a new switch. NOTE - getting the new switch in took some work... a good amount of pressure and rocking to get it back into the housing. Reattached wires.
Squeezed side spring clips on the old holder, removed it, and installed a new holder. Reattached wires. NOTE that my connection covers were a bit brittle.
Folded the housing back up, reinstalled three flat head screws, turned on the power, life is good.