can somebody help me with my interior lights? some work..

i figured there were lights that might be burned out, so i felt about and found two of them, the one i got out wasnt burned out, but one of the plastic tabs is broken. i pressed it in and turned it while i had the parking lights on, but i didnt get anything.
yeah, all my guages work, but my left signal indicator (the little green arrow) wasnt working earlier, but i tapped on the guage a few times and it started working again.