Can someone tell me what all is involved with this option,does it come with a rear speaker and a rear speaker switch?? I am trying to put mine back to original. Thanks Darryl.
I am going to guess that the rear speakers were standard and what might have been optional was a fader that allowed you to adjust the sound from front to back.
R31 is single rear speaker and R32 is rear speakers.
The E-bodies fader may have been built in to the radio, been a while since I actually studied one of these radios.