I recently got some LED's for my 1998 chevy camaro, when I put them in they didn't work so I took them out and put in the regular stock ones again and the backlight still didn't work, is there a certain way the lights go back in place in the cluster or where is the fuse so I dan see if I blew the fuse? Help plz

 

Fuse panel on the left side of dash.
Owner's Manual would show you - download one.

LED bulb? As in pop out bulb socket, unscrew present bulb, and screw in new bulb?
If so, the two bayonets on the side of the base are at different heights matching the same cutouts in the socket.
If the bulbs, either type, are installed correctly, functional power - brake & tail - goes to the correct filament, or correct polarity of the LED bulb.

If LED replacement card, then check wiring again and ensure proper ground completing the circuit.