I don’t have a Bounder but do remember someone posting about lights in the bunk area above the drivers/passengers seats.  They had two sets of lights....one set was right over the driver/passenger under the bunk when the bunk was in the raised position.  They said this set of lights was controlled by a switch near the entrance and at floor level and labeled ‘ceiling lights’.  The other set is in the ceiling over the bunk when the bunk is lowered.  There are switches directly on each of these lights and will come on if the switch is on and the bunk is fully lowered.  Not sure which set you have or are are referring to, but hope this helps.

This (the latter) is also how they operate on my 2017 Storm.

- Mike