1999 Pontiac grand am se and the dash lightdoor lights shifter and radio light don't work after radio light was cut?

It sounds like there may be a blown fuse or a wiring issue stemming from the radio modification. When the radio light was cut, it could have inadvertently affected the electrical circuit that powers the dashboard lights, door lights, shifter light, and radio light. Check the fuse box for any blown fuses and inspect the wiring connections near the radio for any damage or loose connections. If the issue persists, consulting a professional mechanic may be necessary for a thorough diagnosis.