as no one else has answered ill give a rough guide,
there will probably be 4 pairs of coloured cables which are for the four speakers, these will be in corresponding colours ie grey will be + and there might be a grey with black stripe which will be the - you should then be left with about 3 wires, black will be your ground. and the final two will be permanent + and ignition + the permanent + will go to your radios "mem + 12v" connection and the ignition will probably be labelled "ign + 12 v"