radio not working in my 2000 passat cant find any blown fuses any suggestions??

 

I installed a new radio in my accord and just a few days ago the radio stopped working. I bought a new radio and installed that, the new radio also does not work. I have looked over all the fuses and they all look ok, but I realized that I can not find the radio fuse. It is not in any of the diagrams that are by the fuse boxes and my car did not come with a manual. Can anyone help?