wow this Sixty Special Fleetwood is a mess in terms of the radio... someone RIPPED it out, glued shit back on and stuff.
Unfortunately i was unable to find a correct wiring diagram for the Radio System. I've got the following wires (which should relate to the speakers +/-)
Something that could be called 'Tan'
The car has Speakers labled with "Delco Bose Gold Series" and seem to be the speakers with the integrated amps.