Turn Signal Flasher

My car is a work of art, it's been running great. Except my turn signal flasher has gone out, and I cannot find where to put the new part. I don't want to take it in, and pay for someone else to do it when I can do it myself. I just have the problem of locating it, some say by the fuse box, behind the radio, but it's not there, unless I overlooked it. Please help! Thank You