anti lock???

i just purchased a 93 talon tsi awd and the anti lock light is on what could be the problem???

obviously a sunfire and an eclipse are pretty different, but when i used to have my sunfire, the ABS light would come on and stay on for about a week then randomly shut off and randomly come back on for no particular reason. when i actually figured out what it was, one of the ABS sensors on my front brakes got a short in the wire while i was replacing brake pads. hopefully that helps give you a possible place to start checking.