If you still get the light after replacing the rear sensor (in my experience the brake light only comes on with REAR problems, not front) then you should try cleaning out your diff. The sensor could be fine but not picking up the expected values because the tone ring is all gummed up.
_________________

05 CRD Sport Dark Kahki
RRO: Adventure Rack/Rails ** MOPAR: Skids/Renny Flares & 255/75r17 (32.1) BFG M/T on JK wheels ** ARB: Bumper/IPF lights/790/948/shocks ** GDE: TCM/Hot Tune ** ROCKLIZARD: Super Sliders/Komodo Bumper
My Build ThreadUS Army Infantry