The radio and clock went out - 2004 Toyota Corolla

The fuse that powers your cigarette lighter port also powers the clock. If only the clock is dead then it is not a fuse issue. This is a very common problem with the 96-05 Corolla clocks. The clocks are very prone to internal failure. I offer a reasonable repair service with a lifetime guarantee, check it out:
www.autoclockrepair.com
There is a bunch of useful info there. Drop me an email if you have questions, thanks!