how to put back in my factory radio

hi i have a 1992 pontiac firebird and want to put back in my factory radio myself and dont want to pay $60 to have someone else do it could anyone help me? i have to buy the wires for the factory but i already have them in the car itself could someone please help me before friday afternoon because i have to drive for an hour and cant do it without a radio!!!
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thanks

simple...if the wiring harness it in the car, plug it in to the radio, and then plug the antenna wire into the back also...last slide the radio back in the hole. does that help at all?

similar question. installing a new cd player in my 92 sunbird from the factory stereo. i have the wiring harness for my player, and i know i have to buy an under-dash carrier. taking into consideration the split-set up of the factory stereo (receiver is a separate unit from the tape deck) how much of a nightmare am i looking at? anyone had experience with this?