96 toyota corolla, prestige aps875a

  Im having a problem installing an alarm into a 96 toyota corolla. This is basically the first time i have ever tried installing an alarm. I dont want to sound stupid but im very lost as to what im supposed to do next. I did all the connections, double checked with a multimeter to be sure everything was right. Up next i hooked up all the connectors to the alarm brain, then i connected the car battery. I must say that the instructions included with this alarm are very vague and confusing. I dont know if im supposed to program the remotes or if the alarm should be working just by connecting everything up. As it stands nothing works, the alarm does nothing at all, the led doesnt flash and the alarm never goes off or disables start. At this point im hoping that i am supposed to do some programming before this will work as i am totally lost. If anyone can help with some pointers id greatly appreciate it. By the way im very experienced with car electronics as i repair cars for a living and im sure the wires i tapped into are the right ones. Just never got into alarms before, thanks for any and all help and sorry for the long post.