Stock radio wiring diagram help

[MylilBowTie]

I'm trying to get a diagram of the wire colors and what they are. Its a 12 point harness for a 1984 Silverado with front and rear speakers. I have some figured out other than the polarity.

Blue connector:
Light Blue wire / Dark Blue with Light Blue stripe Driverside rear speaker
Yellow / Brown with Yellow stripe Passengerside rear speaker

Clear connector:
Light Gray wire / Tan wire Driverside front speaker
Dark Green wire / Light Green Passengerside front speaker

Black connector:
Light Yellow wire / ??
Light Gray wire / ??
Black wire / Ground

So if I could get the polarity for the speakers front and rear. Then the light yellow wire and light gray wire for the black connector.

[454HO]

Maybe this will help - http://www.installdr.com/Harnesses/GM-Wiring.pdf

Most all GM vehicles use the same color codes.

[MylilBowTie]

I was looking at that site but it doesnt seem to all match my harness.