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The switches I ordered have tabs that can be fastened to the lid with small bolts, or glued. Cut a hole in he lid about 1/4" by 1/2" for the switch travel and drill two 1/8" holes for screws.. Mount it using 1/8" by 1/2" screws and nuts. Once I assemble it, I will take pictures and send them to you.
I would suggest one change. One may wish to turn the light off, so I would mount the switch so that it can be operated without removing the lid.
REUSE YOUR OLD LAPTOP BATTERY TO MAKE A POWER BANK