I prolly can't be of much help since I have the mach 460....but I think it should be yellow=acc power, red=power from battery, black=ground, then u have speaker colors, blue=remote power, blue with stripe=power antenna.
I can't remember the blue ones though, they might be switched up. I'm sure someone else will chime in on this.
what are u tryin to do exactly, add an aftermarket cd player and amp?
Ur ACC wire is what tells the stereo head to cut on when the key is in the accessory position, key on engine off. Again, i think this is the yellow one.