My car wont start with the key. on 1997 Chevrolet Monte Carlo

I have changed the starter and the key works the ignition but it is not firing the starter. I ran a straight wire to the starter and can start it that way but not with my key. What could be wrong

Asked by for the 1997 Chevrolet Monte Carlo
It is possible the ignition switch is bad.It is possible the ignition switch is bad or you have a problem with the wiring harness from the switch to the starter.check the switch out first .
I changed the wiring harness and the switch but it maybe bad I got a used one ok is there a way i can test the switch before I put it all back