1986 Toyota Camry Wiring Code

Hey everyone

I sure need some help.  I'm wiring an aftermarket stereo for an '86 toyota camry.  None of the stores around here have the wiring adapter kit for this car, and I've found nothing on the internet that has the same color wires that I do.  I'll give you a list of the colors and if you could help me, that'd be great.  I've figured out some, but others I am not sure at all.

yellow - battery/memory

For the above two unknowns, I've been told to wire both to the antenna power wire on my deck.  yes/no?

light green - front right spkr +

I've found some guides that have the top four speaker colors, but none of the bottom four color  combinations correspond with any codes or guides that I have found.  Obviously, they are the four wires for the rear speakers, but I dont know about which are left/right or +/-.  If no-one can tell me what they are, can you tell me how to figure it out?  I'm afraid that I might blow the speakers or something if I mix up the polarities so I don't just want to do a trial-and-error sort of thing. 

Thankyou all for your help.

Have a look here: http://www.installdr.com/Harnesses/Toyota-Wiring.pdf.

Also here: https://www.the12volt.com/installbay/forum_posts.asp?tid=74637&PN=1