After pulling the top unit out, i found the below sticky label with the pin outs. Maximum i will parent out - fl, fr and so forth are the speakers, ign is main electricity, 12v batt is the reminiscence, illum is returned-lighting and earth is apparent. There are some there i am looking to determine. Quite an awful lot most cd changer alternatives on factory radios require virtual conversation to enable. Scl and sda commonly consult with i2c clock and information strains. Sdvc is feasible voice manipulate, swc is probably to be the wheel manipulate. The center eight pins are the four speaker outputs. Diag is diagnosis, mrq is likely to be an interrupt input? A ground should suggest aux or analog floor.