another abs question

ok here it goes my abs light and brake light come on when a good amount of pressure, when applied soft and slow the lights don't come on. It seems like my pump is coming on more then it's suppost to. My pedal is not hard and brakes seem to work pretty good. I replaced the abs acc ball with a used one with only little improvement. let me know what you think?

Is it low on fluid?

the fluid is full

You need a new accumulator ball.....

They are a time sensitive part that is over 20 years old.....

Putting on a used one is usually no better than the one that's already on there....

But you already know that.....