soft brakes and brake light comes on-help[

Are the bleed screws located at the top of each caliper? If not, then they are trapping air in them. Maybe previous owner bled them while removed from the mounts so he could move the bleeder screws to the top and then he reinstalled them on the mounts?

If this is the case, then the calipers were probably installed on the wrong side ( i.e. left on right side and right on left side).

Did this situation just come on suddenly? Did you just change something on your brake system?