Got a problem with my abs.Well a think i have.The breaks on my car a working fine at times but have a slight judder when am driveing.Had a look at the breaks and they are fine had a check at all the wires and conections in the car and are all fine.The light just goes on and off when it feels like it and cant seem to find the problem.Anyone else had this and could put me on the correct track to sorting the problem