I actually don't know how long it hasn't been working, but I guess there is supposed to be a light that turns on if your hatch isn't closed all the way (98 Integra)??
Kinda like the Door Ajar warning light... but my hatch light doesn't light up... what do you think is wrong? I'm thinking either a fuse blew (unlikely since the Door Ajar's work) or the wire came loose. Does anyone know what wire(s) sets off the warning light? Is it a harness of some sort that attaches to the rear hatch lock?
I actually haven't tested this yet (will test when I get home), but my car alarm SHOULD go off if it is armed and the rear hatch gets opened right? If that's true, isn't the alarm using that same "warning light" to know if the rear hatch is open?

 

If its like my rex...the dash idicator has a bulb behind it..it may have blown or it coould be a loose wire.....just my .02

 

check the latch in the hatch area. thats where the light switch is.