Yea, I can't tell what you are asking about. MUST be the arm on the divider or the plastic housing-thingy that holds the switch.
Anyway, you can always put the top up and down manually until you get the part.






(Or, splice the wires together that go to that switch and MAKE SURE the divider is up and things are clear for the top to fold down..... but I didn't say to do it!)