Audio Systems: radio fuses 96 ford f150, lincoln radio, stock ford

Question
howdy,

I just replaced the battery in my 96 F150, and I hooked the battery up backwards, (please stop laughing) When I went to put what I thought was the positive cable on the positive post, the appropriate sparking occurred.

All the fuses in my fuse box are fine, but I lost the radio.

This is just the stock ford radio form 1996.

Is there another fuse somewhere, inline with the power supply that I am not seeing, or did I just fry my radio?

Thanks,  

Answer
yes there is two fuses  for the radio if they are ok the radio  burn  before this happend there is a protection diode that will blow the fuse in the fuse box

if radio is bad here is a link to replace it
http://www.oemautosound.com/pc-179-173-ford-lincoln-radio-f75f-19b165-da.aspx