1969 Dart Rear Seat Speaker Installation

Hello,

I'm looking for guidance on how the factory rear seat speaker was installed. Where was the fader switch located on the dash ? Which side the of package tray was the speaker located. Any photos or images of how everything was assembled (grill, bezel, etc.) ? Possible drilling dimensions for the the fader switch ? Looking for any help on how the speaker system was installed. I would love the see photos of other members cars. Thanks "A" Body community !

Leigh