Abs light need help!!

I posted this in the mod forum as well but i would bet someone here will answer first, i replaced the water pump in my moms 96 GT today, and when i went out to drive it the abs lightis on, i don't get it, it was fine yesterday, i checked all the fuses and such and they are all good, is it possibile when i drained the radiator something got goofed up at the junction box up on the passenger side or i knocked something loose???? I appreciate the help again the car is a 96 gt vert 5 speed with 61K thanks dan

Thanx, i found it though there is a ground wire that must have been old and brittle cause it was snapped some new wire ad a few minutes and we were as good as new!!! thanks for the help though Dan