If i put a new radio in my ( future ) Maxima 1994 GXE , there is an amplifier who come stock for those car . Will it work with my new radio ? Am i supposed to plug something special ? I remember that the guy at the audio shop canceled it when i got my 1991 . I would like to make it work .

 

you can put a aftermarket radio in your car, and you will be fine, you might want to replace the front and rear speakers.