Check to make sure the polarity output on the alarm is hooked up to the proper wire for the parking lights on the car. If you have the alarm set to (-) output and you connected it to the (+) parking light wire then it won't work or vice versa.

 

make sure the fuse is in, open the door little door on the brain, inside a fuse is taped down, incert it in to either to trigger + or - it is labeled on how you have it wired. common mistake,