Anti Lock Light on 1990 Honda Prelude

The Anti Lock light is always on, but when it's turned off, the brakes usually shake whenever I drive. What's the deal with this, coz I've already had the brakes fixed and when I asked about this problem, they said it's okay.

Asked by for the 1990 Honda Prelude
There is a real problem with your ABS, have a better shop look at this, than the 1 you just tried. It sounds like the ABS is energizing when it should not. Then the ABS system gets confused and turns itself off and then illuminates the ABS bulb to signal that there is a problem with the ABS or brakes.