i recently installed a sony cdx ca650x in my 89 subaru and the power wont go on. i got it from a friend and it worked in her car but ive had no luck. i tryed the reset button but still nothing. i got a wire harness and diagram for the headunit so i know its wired right. the only wires i didnt connect are the telephone mute (light blue) from the unit and the illumination (orange) and power antenna (blue) from the wiring harness. i dont even know what the telephone mute is. i need help.