your aftermarket harness should look like this
it's the old jeep/eagle harness if a shop sold you a chry harness (has 2 plugs) its not correct.
the above picture is what i used on my 95. and colors from that to a new radio match color for color.
like stated above if harness has been cut then get a multimeter and test wires.
if all else fails 9 of the 11 wires for a radio to work are easy. front & rear speakers could always just run new wires.. ground take to good unpainted surface. as for constant & ign. you can get both from main harness close to steering wheel.