Answer Questions about brakes

If steering wheels vibrate at a certain speed when brakes are applied what should be done to correct this

replacing rear brakes on a 2002 lincoln continental, how to do i do it?

also feels like booster has no vaccuum also bleed all four wheels

Fog light also comes on

my brakes go to the floor when turning right on my suzuki vitara 4u 1.6 they have been bleed and changed the mast...