How do i re-install the alarm on a 2000 dodge neon????? its the factory alarm.?

I have the factory alarm on the car, i just stop working, i change the battery of the remote and nothing, i think there should be some kind of test to setup it up again. If somebody can help me with that plz.zHow do i re-install the alarm on a 2000 dodge neon????? its the factory alarm.?I would have to say your remote broke somehow. Check all fuses in car. If all is well, you need to go to the dealer for a new remote, or buy an aftermarket alarm.