Brakes

Just changed rotors and pads on the front
of my 04 Jeep Grand Cherokee Laredo no
problem well..... Now I have a severe
grinding and pulsating pedal when coming
to a slow stop and no abs or brake lights are
on on the dash while this is happening  but
the grinding and pulsating stop when both
the abs and the brake lights come on to me
it feels like sumthing is wrong wit the abs
system WTH help