Sony CDX-CA400 CD Player "replace led display car stereo" Questions

...replace the light bulb (if any?) in the faceplate? Any other possibility (e.g., power supply?) JP how did you change the led and where did you get the led light?? Your display lights are burnt out. ...

...led, this is a possibility. No way for anybody to know if you have it wired wrong if they can not look at it themself. The red wire is for power when the key is on, the yellow wire should get power ...