Hi Larry does this help?
There should be 4x 2 pin connectors to the left of radio and 1x 4pin connector.
1/ Black/ Black green stripe front speaker
2/ Black/ Blue red stripe radio
3/ Black/ Black red stripe rear speaker?
4/ Black red stripe x2. This goes into one side of 4 way connector.
Then there are 3 wires that go into 4 way connector that also go to the fader knob on the panel next to steering column.They are 1 Red, 1 green, and I think 1 light brown. Hard to tell as my wires have paint on them.
Hope this helps.