I bought my '99 about 3 weeks ago. It has the same thing with the clock. I knew it was out when I bought the vehicle but, one day got in and ...it worked! When I first tried to set it, it seemed a bit confused. More like malfunction than a short. After fiddling with the settings for about 30 seconds she worked for perfect for about one day - starting, stopping, bumps etc. The next morning - the "dead square" returned. Been that way for about the last week or so now.
Might try to dive in to check the wire this weekend otherwise I may just settle for the stereo/clock