I've noticed an odd issue in my 96' 850 (Base) that all of the front speakers work perfectly but none of the rears work at all. No static, nothing. I've already replaced the head unit (ditched my temperamental original for one with a cd player, still oem from a higher trim level) I was wondering if this was a common issue or just a strange wiring fluke.
Thanks for any input!
-Luke

 

Mine (94 base model) doesn't play either but haven't looked into it. (also upgraded to the premium sound system).