there wont be any power on the column side, just the dash side, that should come from the radio, if they light up you should find some power.
you got the radio on while testing it?
this could also be a bad switches in the wheel. they have power since they light up, but the buttons could be shot out.
you just stick a small screw driver in from the top or bottom and pry it out, carefully, the wire to them is short. maybe try to clean them up with electrical parts cleaner, under the button of course.
i had no lights or function on mine, i changed the clock spring and put on a new steering wheel with in better shape switches and they all came back to life. sad part is i was trying to get the airbag light off, but got my radio controls to work instead. lol
