Mustanglovr Sue

so I had a fender bender in oct, my full thing of iced tea explodes on my dash, completely destroying my shaker 500. it doesn't work but im convinced its draining power, whats the simplest way to cut power to thing thing? any way to simply pull a fuse or go in through the hood?
ive done many a car stereo in the old days, but this car is way more stuff than my old cars. I really don't want to take the thing out, I cant afford a stereo and really don't need one,i just need thing thing to stop draining my battery!
thanks