AIWA CDC-x227 CDPlayer

on the wiring harness going into the back of the radio or the wiring harness going out to the car? ... if its the radio then you can buy one from on ebay for 6 bucks AIWA WIRE HARNESS CDC X407 CDC Z137 CDC X927M NEW AI 01

Do you have the speakers hooked up already and you just need to figure out the power,yellow and what about black ground?Let me know.I am looking around now.What car make/model are you putting it into?Also,where did you purchase the stereo?Online,store,etc.?

check for a logo that shows a speaker with a cross(X) across. just switch this back. this is also available on the remote. You could normally find this on the top side so as to mute easily when in a traffic junction. Check if this button is jammed. Also check if the display shows a mute , if not the sound reduction could be a different issue related to the audio output. check if any speaker connections are short, or speakers connections touching the body. Chek on the wiring once again with a multimeter , for any shorting, correct positve voltage and good ground. hope this helps. Good day

have you tried powering down unit and seeing what happens?

do you have harness going to your system if so you can match the wire colors together if not you will have to hardwire but keep in mind you will need a 12v tester with a light on it to check your ground lead your acc or ignition and then your direct or constant 12v you will have to check these three wires with a volt meter if you dont have a harness for your vehicle

http://www.docs.sony.com/release/CDCX227.pdf
Look on page 2.....hope this helps.

Are you asking for Instruction Manual or Service Manual, please mention it.

All U can do is cry - no warranty and not cost effective to repair the DOA. Tough break.

red = 12 volts switched (ignition)
yellow = 12 volts constant
black = ground
blue = power antenna
blue/ white = amp turn on

purples = right rear
grays = right front
greens = left rear
whites = right front

black striped speaker wires are negative side

Keep in mind that there are always two fuses in any vehicle that provide power to the radio. One fuse is for switched power, one for constant power. Both fuses need to be good before the radio will work. Often one of the fuses, especially the constant power fuse, is shared with other electrical circuits and may not be labeled as a radio fuse. Check all the fuses in the vehicle, including any fuse box under the hood. See if any other electrical systems in the car aren't working, especially the dome light, cigarette lighter, door chime buzzer, or clock.