why does the engine not turn over after installing new ignition switch. on 1992 Buick Riviera

the key became logged in the ignition,replaced with new switch but the engine will not turn over,it was running fine until this happen, the switch came with two wires attached,can you bypass this anyway to make the car start or what is the next step to getting car to start,everything else has power, is it something to do with the key,because the new key does not have the the little code things on them,need help must be able to get to work, i had ohm the old key and the code 3 is 677ohms, thanks, i really need help.

Asked by for the 1992 Buick Riviera
I am pretty sure that the switch MUST match the key. If not, well it won't work.