no power maybe?

well i was taking out my blue lights from under my dash, when my alarm all of a sudden went out. i bought the car with the alarm and the blue lights attached, i decided to re-wire the lights because they weren't working properly...so when i cut one of the wires my alarm just died, nothing worked. i think the guy wired it so that the blue lights flashed when the alarm went off or something, i have no idea. it was messed up. anyways, how would i go about hooking up the power back up to all of these things... i don't want to just randomly start hooking wires together. any input helps