Inside Lights Stay on!

[lx mike]

was helping my brother with his truck and had to open my hatch to get my tool set and didn't notice untill this morning that my dome light didn't go out. i checked to make sure hatch was shut tight and also any doors too. about a month ago i locked my key under my hatch and found the extra set i was given didn't work so i climbed inside car and ended up messing up the plastic back there that held the light for the rear hatch area and i stuck it back and it stays in place but doesn't clip in cause of tearing the plastic. now my dome and hatch stays on all the time, i pulled the bulbs but would still like to fix it. this is the first time it has done this. didn't run down my battery cause i assume it has been on since i opened the hatch at 3 pm yesterday and didn't notice till about 4:30 am this morning when i left for work.
is there a switch back there that works off the hatch closing??