Is fuse 29 the one you say is good? If that fuse is good, check your tail lights. If the tail lights are not working either, check the TAIL LAMP fuse in the engine compartment relay box.
There are 2 different wiring diagrams depending on if you have the amplifier or not. If you have only the basic radio, it would not have the amp. If you have a premium option, it would have the amp.
There is also another wiring color code I got from another website that's different--more like the standard colors. I'm going to include that color code as well in case you find the colors don't match the diagrams.
In the diagrams, there are actually 2 wires that run the light on the radio. One is green and one is brown with a white stripe. An aftermarket CD player will probably not have any wires for the light and just have it come on when the radio is on--day or night. So, if they connected those factory wires anywhere, that may be your problem.
I have pasted all of the relevant wiring diagrams below, though they may be hard to read because of picture size policies at FixYa. Please let me know if you have more questions.
Possible alternate color scheme:
Radio Constant Wire 12V+: Red
Radio Ignition Switched Wire 12V+: Yellow
Radio Ground Wire: Black
Radio Illumination Wire: Pink/Black
Radio Dimmer Wire: n/a
Radio Antenna Trigger Wire: n/a
Factory Amplifier Turn On Wire: n/a
Left Front Speaker Wire (+): White
Left Front Speaker Wire (-): Brown
Right Front Speaker Wire (+): Black
Right Front Speaker Wire (-): Yellow
Left Rear Speaker Wire (+): Blue
Left Rear Speaker Wire (-): Red
Right Rear Speaker Wire (+): Green
Right Rear Speaker Wire (-): Orange