If the Alt Fuse is not blown (its a big 75amp mama-jama) Pic # 2 in this link:
F/S:MD S13 blk dash mint,S14 roof cover,75A fuse : Interior (for sale)...make sure you check that. Its located next to the battery. And youre positive that all else is good to go, it could be your ignition switch. The material they are made out of seems rather fragile. I've had my ignition switch crap out on me...got one from Advance, only to have that one die in a few months. Mines a '93 KA24DE as well. Good Luck.
-Royce