need help with 24 point radio connector

i took a stock cd player out of a 2003 grand am and need some help with identifing a few wires. its a 24 point plug and here is what ive found out so far.

A1- purple- class 2 serial data(dont know what that means)
A2-A5 not used
A6- pink-??????
A7-green-?????????????
A8- tan-L/F speaker(+)
A9- grey-L/F speaker(-)
A10-light blue- R/R (+)
A11-dark blue- R/R (-)
A12-black- ground

B1- orange- power
B2- not used
B3- pink- radio on signal (I have a green wire in this slot not pink)??
B4- grey- lamp
B5- black- ground
B6- purple- gain control signal
B7- not used
B8- brown- L/R (+)
B9- yellow- L/R (-)
B10- LT. green- R/F (-)
B11- DK. green- R/F (+)
B12- brown- ??????????????????

neede to find out about A6pink, A7green and B12brown. also why on B3 i have green wire not pink and if it would be for samething as if it were pink.

what radio is it and does it hav a tape unit?

On models with the tape deck below the CD controls the tape deck when in use. fast forward, rewind, etc.

Are you installing a new head unit ?

its a stock radio with cd, no cassette. out of a 2003 grand am. i cut the wiring with connector out of the car too. im going to put it in either my 91 s10 or 86 isuzu pup. just need to figure out those 4 wires. the info i got was from audio and eletronics forums-j-body.org. it showed me wiring for a standard 24 port connector. and my 24 port has a few more wires than they spoke of.
its a stock delco part number 10315120 made in 2001.

Well from the list above, sounds like you hav all the wires coded you need.
All spkr wires, grounds, power, the b3 wire is signal on for the amp(or something).

The other wires if anything are for connecting a tape deck or cd changer or other devices Gm had in store for it.

okay thanks man. ill go with it. if i have any problems ill let you know.