1996z28red

I have a 1997 camaro RS and there is a problem with the ignition. when I turn the key no dash lights come on except the seatbelt light(it flashes twice then turns off) but i get the dinging that the car recognizes the key in the ignition and i can still here the fuel pump come on but when the i try to start it.....nothing. when the key is in the on posion the security light flashes. The stock radio was removed by the guy that owned the car before me so i dont know if that messed anything up. the car currently has no radio.any help is appreciated. thank you!!!