Need help with Radio 2 fuse!

The radio 2 fuse on my 2013 Tacoma keeps blowing out. As soon as I try and put a new one in it instantly pops. I know this means there is a legitimate short in the system somewhere but I cant seem to get ahold of a schematic. I could not find anything obvious when looking at some of the different wires, however I am shooting in the dark while looking at them. The only thing that seems to be effected are the speakers. Radio head unit works fine, just no sound...

 

Good post above looks like a defective amplifier or a shorted wire going to the amplifier.

You could unplug all the speakers from the amplifier and replace the fuse just for giggles to see if the fuse still blows.

 

Right on, thanks!