Audio Systems: no power to radio, aiwa radio, fuse block

Question
In a 91 Thunderbird, an after market Aiwa radio that was professionally installed suddenly lost power after 2 years of use.  Fuses are not blown.  I tried replacing with a new radio, but it has no power either.  When replacing the radio I noticed that off the car harness, the orange and blue wires are not connected to anything.  I also noticed that the blue  wire from the adapter harness (with an in-line fuse) is connected to the blue/white on the car.  I dont know if this is incorrect because it did work fine before.  It seems the problem lies somewhere else, but the only thing I know to check is the fuses.  Any thoughts?  Thanks.  

Answer
Get yourself a $7 12volt test light (auto parts store) to see if there is power at the fuse block. These can be be very handy when troubleshooting power supplys.  blue/white is probably for the power antenna or a antenna booster.

Sincerely,
Jerry Mael