Your 94 Firebird's power windows and radio do not work and there is no power to the fuse Checked the fusible links by the battery and all seem fine Is there anything else that you could check?

Check for a short in the door to body wiring harness (the rubber by the door hinges). Look for exposed wire and/or a crack in the rubber loom. If you see visible signs of wear, expose as much of the wiring as you can and look for problems. A short will give the same appearance as no voltage that you're seeing at the fuse block. You could also disconnect the battery, remove the fuse and Ohmmeter the two fuse points. The circuit should be open. If you measure any resistance, you have a short in that circuit.